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AS WHOIS

Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.

Your public IP address216.73.216.205 IPv4

AS26397

OPTIPUTER - The Regents of the University of California - University of California, San Diego. Announcing routes
AS nameOPTIPUTER
OrganisationThe Regents of the University of California - University of California, San Diego.
Registry (RIR)ARIN
HandleAS26397
RangeAS26397
Registered22 Dec 2006
Last changed20 Oct 2015
1IPv4 prefixes
0IPv6 prefixes
2Upstreams
0Downstreams

Upstreams

ASNetwork nameVisibility
AS7377UCSD - University of California, San Diego217
AS2153CENIC-2153 - CENIC11

Downstreams

None seen.

IPv4 prefixes (1)

RPKI-validate all prefixes of AS26397

Contacts

RoleNameHandleEmail / phoneAddress
registrantThe Regents of the University of California - University of California, San Diego.THERE-41Prism Project,University of California, San Diego , 9500 Gilman Drive , MS-0505, La Jolla, CA, 92093-0505, United States
nocSDSC NOCSDSCN-ARIN[email protected], +1-858-534-50909500 Gilman Drive, MS-0505, La Jolla, CA, 92093-0505, United States
abuse, noc, technicalNetwork Operations CenterNOC1807-ARIN[email protected], [email protected], [email protected], [email protected], +1-858-822-0249IT Services, Mail Code 0928, Attn: Malerie Samadi, 9500 Gilman Dr, La Jolla, CA, 92093-0928, United States
technicalbrian dunneBDU62-ARIN[email protected], +1-858-334-95799500 Gilman Drive, La Jolla, CA, 92093, United States
technical, abuse, administrative, nocThomas HuttonTH60-ARIN[email protected], [email protected], [email protected], +1-858-534-5136, +1-619-787-0349, +1-858-534-5152PO Box 128, Poway, CA, 92074-0128, United States
technicalTech OptiputerTECHO2-ARIN[email protected], +1-858-534-3036Atkinson Hall, 9500 Gilman Drive, La Jolla, CA, 92093-0436, United States
noc, technicalSDSC NOCSDSCN-ARIN[email protected], +1-858-534-50909500 Gilman Drive, MS-0505, La Jolla, CA, 92093-0505, United States
abuse, nocPhil PapadopoulosPAPAD12-ARIN[email protected], +1-858-922-730515 Sun Terrace, Laguna Niguel, CA, 92677, United States
abuseAbuse OptiputerABUSE1467-ARIN[email protected], +1-858-534-3036Atkinson Hall, 9500 Gilman Drive, La Jolla, CA, 92093-0436, United States
nocNOC OptiputerNOCOP5-ARIN[email protected], +1-858-534-3036Atkinson Hall, 9500 Gilman Drive, La Jolla, CA, 92093-0436, United States
abuse, technical, nocThomas HuttonTH60-ARIN[email protected], [email protected], [email protected], +1-858-534-5136, +1-619-787-0349, +1-858-534-5152PO Box 128, Poway, CA, 92074-0128, United States
Raw registry response
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    "endAutnum": 26397,
    "entities": [
        {
            "entities": [
                {
                    "events": [
                        {
                            "eventAction": "last changed",
                            "eventDate": "2025-08-28T15:15:18-04:00"
                        },
                        {
                            "eventAction": "registration",
                            "eventDate": "2005-05-26T17:45:11-04:00"
                        }
                    ],
                    "handle": "SDSCN-ARIN",
                    "links": [
                        {
                            "href": "https://rdap.arin.net/registry/entity/SDSCN-ARIN",
                            "rel": "self",
                            "type": "application/rdap+json",
                            "value": "https://rdap.arin.net/registry/autnum/26397"
                        },
                        {
                            "href": "https://whois.arin.net/rest/poc/SDSCN-ARIN",
                            "rel": "alternate",
                            "type": "application/xml",
                            "value": "https://rdap.arin.net/registry/autnum/26397"
                        }
                    ],
                    "objectClassName": "entity",
                    "port43": "whois.arin.net",
                    "remarks": [
                        {
                            "description": [
                                "contact for technical issues"
                            ],
                            "title": "Registration Comments"
                        }
                    ],
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                    "status": [
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                    ],
                    "handle": "NOC1807-ARIN",
                    "links": [
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                            "href": "https://rdap.arin.net/registry/entity/NOC1807-ARIN",
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                        },
                        {
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                    "events": [
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                            "eventAction": "last changed",
                            "eventDate": "2026-07-09T12:15:50-04:00"
                        },
                        {
                            "eventAction": "registration",
                            "eventDate": "2009-05-14T15:30:04-04:00"
                        }
                    ],
                    "handle": "BDU62-ARIN",
                    "links": [
                        {
                            "href": "https://rdap.arin.net/registry/entity/BDU62-ARIN",
                            "rel": "self",
                            "type": "application/rdap+json",
                            "value": "https://rdap.arin.net/registry/autnum/26397"
                        },
                        {
                            "href": "https://whois.arin.net/rest/poc/BDU62-ARIN",
                            "rel": "alternate",
                            "type": "application/xml",
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                    ],
                    "objectClassName": "entity",
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                {
                    "events": [
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                            "eventAction": "last changed",
                            "eventDate": "2026-07-10T13:23:59-04:00"
                        }
                    ],
                    "handle": "TH60-ARIN",
                    "links": [
                        {
                            "href": "https://rdap.arin.net/registry/entity/TH60-ARIN",
                            "rel": "self",
                            "type": "application/rdap+json",
                            "value": "https://rdap.arin.net/registry/autnum/26397"
                        },
                        {
                            "href": "https://whois.arin.net/rest/poc/TH60-ARIN",
                            "rel": "alternate",
                            "type": "application/xml",
                            "value": "https://rdap.arin.net/registry/autnum/26397"
                        }
                    ],
                    "objectClassName": "entity",
                    "port43": "whois.arin.net",
                    "remarks": [
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                            "title": "Registration Comments"
                        }
                    ],
                    "roles": [
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                    ],
                    "status": [
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                    ],
                    "vcardArray": [
                        "vcard",
                        [
                            [
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                            ],
                            [
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                                {
                                    "label": "PO Box 128\nPoway\nCA\n92074-0128\nUnited States"
                                },
                                "text",
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                                    "",
                                    "",
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                            [
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            "events": [
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                },
                {
                    "eventAction": "registration",
                    "eventDate": "2009-05-15T18:12:21-04:00"
                }
            ],
            "handle": "THERE-41",
            "links": [
                {
                    "href": "https://rdap.arin.net/registry/entity/THERE-41",
                    "rel": "self",
                    "type": "application/rdap+json",
                    "value": "https://rdap.arin.net/registry/autnum/26397"
                },
                {
                    "href": "https://whois.arin.net/rest/org/THERE-41",
                    "rel": "alternate",
                    "type": "application/xml",
                    "value": "https://rdap.arin.net/registry/autnum/26397"
                }
            ],
            "objectClassName": "entity",
            "port43": "whois.arin.net",
            "roles": [
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            ],
            "vcardArray": [
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                        "text",
                        "The Regents of the University of California - University of California, San Diego."
                    ],
                    [
                        "adr",
                        {
                            "label": "Prism Project,University of California, San Diego\r\n9500 Gilman Drive\r\nMS-0505\nLa Jolla\nCA\n92093-0505\nUnited States"
                        },
                        "text",
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                            "",
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                            "",
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                    ],
                    [
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        },
        {
            "events": [
                {
                    "eventAction": "last changed",
                    "eventDate": "2011-09-20T19:20:21-04:00"
                },
                {
                    "eventAction": "registration",
                    "eventDate": "2006-10-23T16:02:22-04:00"
                }
            ],
            "handle": "TECHO2-ARIN",
            "links": [
                {
                    "href": "https://rdap.arin.net/registry/entity/TECHO2-ARIN",
                    "rel": "self",
                    "type": "application/rdap+json",
                    "value": "https://rdap.arin.net/registry/autnum/26397"
                },
                {
                    "href": "https://whois.arin.net/rest/poc/TECHO2-ARIN",
                    "rel": "alternate",
                    "type": "application/xml",
                    "value": "https://rdap.arin.net/registry/autnum/26397"
                }
            ],
            "objectClassName": "entity",
            "port43": "whois.arin.net",
            "remarks": [
                {
                    "description": [
                        "ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2013-11-04"
                    ],
                    "title": "Unvalidated POC"
                }
            ],
            "roles": [
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            "vcardArray": [
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            "objectClassName": "entity",
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        {
            "events": [
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                    "eventDate": "2015-05-18T14:31:32-04:00"
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            ],
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                },
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            ],
            "objectClassName": "entity",
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                    ],
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            ]
        },
        {
            "events": [
                {
                    "eventAction": "last changed",
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                },
                {
                    "eventAction": "registration",
                    "eventDate": "2006-10-23T16:02:18-04:00"
                }
            ],
            "handle": "ABUSE1467-ARIN",
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                },
                {
                    "href": "https://whois.arin.net/rest/poc/ABUSE1467-ARIN",
                    "rel": "alternate",
                    "type": "application/xml",
                    "value": "https://rdap.arin.net/registry/autnum/26397"
                }
            ],
            "objectClassName": "entity",
            "port43": "whois.arin.net",
            "remarks": [
                {
                    "description": [
                        "ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2010-06-08"
                    ],
                    "title": "Unvalidated POC"
                }
            ],
            "roles": [
                "abuse"
            ],
            "vcardArray": [
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                        },
                        "text",
                        [
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                            "",
                            "",
                            "",
                            ""
                        ]
                    ],
                    [
                        "fn",
                        [],
                        "text",
                        "Abuse Optiputer"
                    ],
                    [
                        "org",
                        [],
                        "text",
                        "UCSD, Calit2"
                    ],
                    [
                        "kind",
                        [],
                        "text",
                        "group"
                    ],
                    [
                        "email",
                        [],
                        "text",
                        "[email protected]"
                    ],
                    [
                        "tel",
                        {
                            "type": [
                                "work",
                                "voice"
                            ]
                        },
                        "text",
                        "+1-858-534-3036"
                    ]
                ]
            ]
        },
        {
            "events": [
                {
                    "eventAction": "last changed",
                    "eventDate": "2011-09-20T19:19:52-04:00"
                },
                {
                    "eventAction": "registration",
                    "eventDate": "2006-10-23T16:02:09-04:00"
                }
            ],
            "handle": "NOCOP5-ARIN",
            "links": [
                {
                    "href": "https://rdap.arin.net/registry/entity/NOCOP5-ARIN",
                    "rel": "self",
                    "type": "application/rdap+json",
                    "value": "https://rdap.arin.net/registry/autnum/26397"
                },
                {
                    "href": "https://whois.arin.net/rest/poc/NOCOP5-ARIN",
                    "rel": "alternate",
                    "type": "application/xml",
                    "value": "https://rdap.arin.net/registry/autnum/26397"
                }
            ],
            "objectClassName": "entity",
            "port43": "whois.arin.net",
            "remarks": [
                {
                    "description": [
                        "ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2013-11-02"
                    ],
                    "title": "Unvalidated POC"
                }
            ],
            "roles": [
                "noc"
            ],
            "vcardArray": [
                "vcard",
                [
                    [
                        "version",
                        [],
                        "text",
                        "4.0"
                    ],
                    [
                        "adr",
                        {
                            "label": "Atkinson Hall\n9500 Gilman Drive\nLa Jolla\nCA\n92093-0436\nUnited States"
                        },
                        "text",
                        [
                            "",
                            "",
                            "",
                            "",
                            "",
                            "",
                            ""
                        ]
                    ],
                    [
                        "fn",
                        [],
                        "text",
                        "NOC Optiputer"
                    ],
                    [
                        "org",
                        [],
                        "text",
                        "UCSD, Calit2"
                    ],
                    [
                        "kind",
                        [],
                        "text",
                        "group"
                    ],
                    [
                        "email",
                        [],
                        "text",
                        "[email protected]"
                    ],
                    [
                        "tel",
                        {
                            "type": [
                                "work",
                                "voice"
                            ]
                        },
                        "text",
                        "+1-858-534-3036"
                    ]
                ]
            ]
        },
        {
            "events": [
                {
                    "eventAction": "last changed",
                    "eventDate": "2026-07-10T13:23:59-04:00"
                }
            ],
            "handle": "TH60-ARIN",
            "links": [
                {
                    "href": "https://rdap.arin.net/registry/entity/TH60-ARIN",
                    "rel": "self",
                    "type": "application/rdap+json",
                    "value": "https://rdap.arin.net/registry/autnum/26397"
                },
                {
                    "href": "https://whois.arin.net/rest/poc/TH60-ARIN",
                    "rel": "alternate",
                    "type": "application/xml",
                    "value": "https://rdap.arin.net/registry/autnum/26397"
                }
            ],
            "objectClassName": "entity",
            "port43": "whois.arin.net",
            "remarks": [
                {
                    "description": [
                        "contact for technical issues"
                    ],
                    "title": "Registration Comments"
                }
            ],
            "roles": [
                "abuse",
                "technical",
                "noc"
            ],
            "status": [
                "validated"
            ],
            "vcardArray": [
                "vcard",
                [
                    [
                        "version",
                        [],
                        "text",
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                    ],
                    [
                        "adr",
                        {
                            "label": "PO Box 128\nPoway\nCA\n92074-0128\nUnited States"
                        },
                        "text",
                        [
                            "",
                            "",
                            "",
                            "",
                            "",
                            "",
                            ""
                        ]
                    ],
                    [
                        "fn",
                        [],
                        "text",
                        "Thomas Hutton"
                    ],
                    [
                        "n",
                        [],
                        "text",
                        [
                            "Hutton",
                            "Thomas",
                            "",
                            "",
                            ""
                        ]
                    ],
                    [
                        "kind",
                        [],
                        "text",
                        "individual"
                    ],
                    [
                        "email",
                        [],
                        "text",
                        "[email protected]"
                    ],
                    [
                        "email",
                        [],
                        "text",
                        "[email protected]"
                    ],
                    [
                        "email",
                        [],
                        "text",
                        "[email protected]"
                    ],
                    [
                        "tel",
                        {
                            "type": [
                                "work",
                                "voice"
                            ]
                        },
                        "text",
                        "+1-858-534-5136"
                    ],
                    [
                        "tel",
                        {
                            "type": [
                                "work",
                                "cell"
                            ]
                        },
                        "text",
                        "+1-619-787-0349"
                    ],
                    [
                        "tel",
                        {
                            "type": [
                                "work",
                                "fax"
                            ]
                        },
                        "text",
                        "+1-858-534-5152"
                    ]
                ]
            ]
        }
    ],
    "events": [
        {
            "eventAction": "last changed",
            "eventDate": "2015-10-19T14:51:11-04:00"
        },
        {
            "eventAction": "registration",
            "eventDate": "2006-12-21T17:02:15-05:00"
        }
    ],
    "handle": "AS26397",
    "links": [
        {
            "href": "https://rdap.arin.net/registry/autnum/26397",
            "rel": "self",
            "type": "application/rdap+json",
            "value": "https://rdap.arin.net/registry/autnum/26397"
        },
        {
            "href": "https://whois.arin.net/rest/asn/AS26397",
            "rel": "alternate",
            "type": "application/xml",
            "value": "https://rdap.arin.net/registry/autnum/26397"
        }
    ],
    "name": "OPTIPUTER",
    "notices": [
        {
            "description": [
                "By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
            ],
            "links": [
                {
                    "href": "https://www.arin.net/resources/registry/whois/tou/",
                    "rel": "terms-of-service",
                    "type": "text/html",
                    "value": "https://rdap.arin.net/registry/autnum/26397"
                }
            ],
            "title": "Terms of Service"
        },
        {
            "description": [
                "If you see inaccuracies in the results, please visit: "
            ],
            "links": [
                {
                    "href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
                    "rel": "inaccuracy-report",
                    "type": "text/html",
                    "value": "https://rdap.arin.net/registry/autnum/26397"
                }
            ],
            "title": "Whois Inaccuracy Reporting"
        },
        {
            "description": [
                "Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
            ],
            "title": "Copyright Notice"
        }
    ],
    "objectClassName": "autnum",
    "port43": "whois.arin.net",
    "rdapConformance": [
        "nro_rdap_profile_0",
        "rdap_level_0",
        "nro_rdap_profile_asn_flat_0"
    ],
    "remarks": [
        {
            "description": [
                "contact SDSC NOC for emergencies at 858-534-5090.  Request SDSC/PRISM Network Support"
            ],
            "title": "Registration Comments"
        }
    ],
    "startAutnum": 26397,
    "status": [
        "active"
    ]
}

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