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AS237
MERIT-AS-14 - Merit Network Inc. Announcing routesAS nameMERIT-AS-14
OrganisationMerit Network Inc.
Registry (RIR)ARIN
HandleAS237
RangeAS237
Registered12 Sep 1988
Last changed21 Sep 2026
Abuse contact[email protected]
83IPv4 prefixes
9IPv6 prefixes
9Upstreams
32Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS1299 | TWELVE99 Arelion Sweden AB | 2239 |
| AS174 | COGENT-174 - Cogent Communications, LLC | 1695 |
| AS2914 | NTT-DATA-2914 - NTT America, Inc. | 1238 |
| AS6939 | HURRICANE - Hurricane Electric LLC | 819 |
| AS11164 | INTERNET2-I2PX - Internet2 | 168 |
| AS11537 | INTERNET2-RESEARCH-EDU - Internet2 | 161 |
| AS3303 | SWISSCOM Swisscom (Schweiz) AG | 152 |
| AS7018 | ATT-INTERNET4 - AT&T Enterprises, LLC | 101 |
| AS293 | ESNET - ESnet | 30 |
Downstreams
| AS | Network name | Visibility |
|---|---|---|
| AS231 | MISU-231 - Michigan State University | 563 |
| AS36375 | UMICH-AS-5 - University of Michigan | 481 |
| AS27274 | CMICH - Central Michigan University | 322 |
| AS229 | MERIT-AS-6 - Merit Network Inc. | 315 |
| AS11206 | FSU-AS-1 - Ferris State University | 275 |
| AS396470 | LCC-EDU - Lansing Community College | 248 |
| AS62618 | MICHIGANTECH - Michigan Technological University | 237 |
| AS62676 | UMD-PUBLIC-AS - University of Michigan - Dearborn | 232 |
| AS1638 | MCC-CAMPUS - Mott Community College | 229 |
| AS402639 | WASHTENAW-COMMUNITY-COLLEGE - Washtenaw | 229 |
| AS26174 | SVSU - Saginaw Valley State University | 228 |
| AS46241 | WASHTENAW-ISD-ASN - Washtenaw ISD | 228 |
| AS14924 | MERIT-AS-30 - Merit Network Inc. | 227 |
| AS22217 | CALVIN-UNIVERSITY - Calvin College | 227 |
| AS393817 | LMC-BH - Lake Michigan College | 227 |
IPv4 prefixes (83)
141.218.224.0/22161.133.120.0/21192.41.232.0/22161.133.112.0/2135.46.0.0/18141.210.32.0/19192.203.195.0/2435.24.224.0/19192.122.184.0/21161.133.0.0/17141.218.11.0/24192.122.182.0/23141.218.0.0/16141.210.0.0/1635.33.0.0/1835.62.0.0/16207.75.164.0/23207.72.0.0/14192.35.170.0/24192.122.200.0/24141.218.228.0/23163.253.36.0/22141.210.224.0/1935.33.5.0/24141.218.203.0/2435.58.0.0/16198.17.130.0/23192.160.204.0/2435.24.0.0/1735.50.0.0/18161.133.128.0/1735.39.192.0/19198.108.0.0/14192.138.137.0/2435.39.0.0/19148.61.0.0/1635.50.64.0/1835.71.0.0/1835.46.64.0/1835.38.0.0/1635.68.0.0/15192.41.229.0/2435.24.192.0/1935.39.224.0/1935.64.0.0/14192.188.100.0/2435.50.0.0/17192.245.254.0/24141.210.128.0/17161.133.129.0/24141.218.204.0/2235.34.0.0/1835.63.0.0/16192.88.242.0/24192.245.252.0/2435.16.0.0/16141.210.0.0/1735.39.32.0/19198.17.132.0/2374.115.236.0/2435.33.96.0/19204.39.195.0/24204.38.0.0/16141.217.0.0/16161.133.104.0/21141.218.208.0/2035.40.0.0/1635.37.0.0/1635.39.64.0/1935.25.0.0/1635.33.6.0/2474.115.237.0/2435.24.128.0/18192.160.192.0/24164.76.160.0/19206.201.157.0/24164.76.0.0/1635.39.160.0/1935.39.128.0/19161.133.2.0/2435.70.0.0/1623.135.208.0/2474.115.236.0/23
IPv6 prefixes (9)
RPKI-validate all prefixes of AS237
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Merit Network Inc. | MICH-Z | 880 Technology Dr., Suite B, Ann Arbor, MI, 48108, United States | |
| abuse | Network Abuse | NETWO26-ARIN | [email protected], +1-734-527-5740 | 880 Technology Dr., Suite B, Ann Arbor, MI, 48108-8963, United States |
| administrative | Internet Number Administrator | IN-ORG-ARIN | [email protected], +1-734-763-3448, +1-734-527-5790 | 880 Technology Dr., Suite B, Ann Arbor, MI, 48108-8963, United States |
| technical | Merit Operations | MERIT-ARIN | [email protected], +1-734-527-5717 | 880 Technology Dr., Suite B, Ann Arbor, MI, 48108-8963, United States |
Raw registry response
{
"endAutnum": 237,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-24T07:12:53-04:00"
},
{
"eventAction": "registration",
"eventDate": "2002-09-20T10:10:17-04:00"
}
],
"handle": "NETWO26-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NETWO26-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/237"
},
{
"href": "https://whois.arin.net/rest/poc/NETWO26-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/237"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "880 Technology Dr.\nSuite B\nAnn Arbor\nMI\n48108-8963\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Network Abuse"
],
[
"org",
[],
"text",
"Merit Network Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-734-527-5740"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-11-24T08:57:17-05:00"
},
{
"eventAction": "registration",
"eventDate": "1999-02-18T13:35:59-05:00"
}
],
"handle": "IN-ORG-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/IN-ORG-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/237"
},
{
"href": "https://whois.arin.net/rest/poc/IN-ORG-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/237"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Use [email protected] to report network abuse"
],
"title": "Registration Comments"
}
],
"roles": [
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "880 Technology Dr., Suite B\nAnn Arbor\nMI\n48108-8963\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Internet Number Administrator"
],
[
"org",
[],
"text",
"Merit Network Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-734-763-3448"
],
[
"tel",
{
"type": [
"work",
"fax"
]
},
"text",
"+1-734-527-5790"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-10-28T13:12:58-04:00"
},
{
"eventAction": "registration",
"eventDate": "2007-02-21T15:18:24-05:00"
}
],
"handle": "MERIT-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MERIT-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/237"
},
{
"href": "https://whois.arin.net/rest/poc/MERIT-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/237"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "880 Technology Dr.\nSuite B\nAnn Arbor\nMI\n48108-8963\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Merit Operations"
],
[
"org",
[],
"text",
"Merit Network Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-734-527-5717"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2020-04-21T14:02:48-04:00"
},
{
"eventAction": "registration",
"eventDate": "2009-12-08T09:46:55-05:00"
}
],
"handle": "MICH-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MICH-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/237"
},
{
"href": "https://whois.arin.net/rest/org/MICH-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/237"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Merit Network Inc."
],
[
"adr",
{
"label": "880 Technology Dr., Suite B\nAnn Arbor\nMI\n48108\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-21T14:13:45-04:00"
},
{
"eventAction": "registration",
"eventDate": "1988-09-12T00:00:00-04:00"
}
],
"handle": "AS237",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/237",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/237"
},
{
"href": "https://whois.arin.net/rest/asn/AS237",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/237"
}
],
"name": "MERIT-AS-14",
"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/237"
}
],
"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/237"
}
],
"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": [
"Primary Merit Network ASN"
],
"title": "Registration Comments"
}
],
"startAutnum": 237,
"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.