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AS27
UMDNET - University of Maryland Announcing routesAS nameUMDNET
OrganisationUniversity of Maryland
Registry (RIR)ARIN
HandleAS27
RangeAS27
Registered28 Aug 1984
Last changed19 Feb 2014
5IPv4 prefixes
6IPv6 prefixes
1Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS10886 | MAX-GIGAPOP - University of Maryland | 366 |
Downstreams
None seen.
IPv4 prefixes (5)
IPv6 prefixes (6)
RPKI-validate all prefixes of AS27
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | University of Maryland | UNIVER-262-Z | Office of Information Technology, Patuxent Building, College Park, MD, 20742, United States | |
| abuse | UMD Abuse Role Account | UARA-ARIN | [email protected], +1-301-405-8787 | Office of Information Technology, College Park, MD, 20742, United States |
| technical, administrative | UMD DNS Admin Role Account | UM-ORG-ARIN | [email protected], [email protected], +1-301-405-9955 | Division of Information Technology, College Park, MD, 20740, United States |
| technical, noc, abuse | UMD DNS Admin Role Account | UM-ORG-ARIN | [email protected], [email protected], +1-301-405-9955 | Division of Information Technology, College Park, MD, 20740, United States |
Raw registry response
{
"endAutnum": 27,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-07-08T09:49:51-04:00"
},
{
"eventAction": "registration",
"eventDate": "2004-02-20T14:45:07-05:00"
}
],
"handle": "UARA-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UARA-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/27"
},
{
"href": "https://whois.arin.net/rest/poc/UARA-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/27"
}
],
"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 2025-07-08"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "Office of Information Technology\nCollege Park\nMD\n20742\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"UMD Abuse Role Account"
],
[
"org",
[],
"text",
"University of Maryland"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-301-405-8787"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-28T10:47:55-04:00"
},
{
"eventAction": "registration",
"eventDate": "1998-10-06T16:10:04-04:00"
}
],
"handle": "UM-ORG-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UM-ORG-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/27"
},
{
"href": "https://whois.arin.net/rest/poc/UM-ORG-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/27"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "Division of Information Technology\nCollege Park\nMD\n20740\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"UMD DNS Admin Role Account"
],
[
"org",
[],
"text",
"University of Maryland"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-301-405-9955"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2010-01-06T15:03:38-05:00"
},
{
"eventAction": "registration",
"eventDate": "2010-01-06T13:52:28-05:00"
}
],
"handle": "UNIVER-262-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UNIVER-262-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/27"
},
{
"href": "https://whois.arin.net/rest/org/UNIVER-262-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/27"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"University of Maryland"
],
[
"adr",
{
"label": "Office of Information Technology\nPatuxent Building\nCollege Park\nMD\n20742\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-28T10:47:55-04:00"
},
{
"eventAction": "registration",
"eventDate": "1998-10-06T16:10:04-04:00"
}
],
"handle": "UM-ORG-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UM-ORG-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/27"
},
{
"href": "https://whois.arin.net/rest/poc/UM-ORG-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/27"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"noc",
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "Division of Information Technology\nCollege Park\nMD\n20740\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"UMD DNS Admin Role Account"
],
[
"org",
[],
"text",
"University of Maryland"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-301-405-9955"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2014-02-18T18:26:36-05:00"
},
{
"eventAction": "registration",
"eventDate": "1984-08-28T00:00:00-04:00"
}
],
"handle": "AS27",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/27",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/27"
},
{
"href": "https://whois.arin.net/rest/asn/AS27",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/27"
}
],
"name": "UMDNET",
"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/27"
}
],
"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/27"
}
],
"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"
],
"startAutnum": 27,
"status": [
"active"
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.