Organization
Michigan State University
MISU-231
Registered
Jun 28, 2021
5 years ago
IPv4 Prefixes
7
787,456 addresses
IPv6 Prefixes
2
65,536 × /48
BGP Neighbours
4
3 upstream/peer · 1 downstream
Registration
AS Number AS231 AS Name MISU-231 Organization Michigan State University Organization ID MISU Address IT Services, 450 Auditorium Rd., Suite 400, East Lansing, MI, 48824, United States Country United States (US) Registry ARIN Allocated Jun 28, 2021 Record Created Jun 28, 2021 Last Updated Jun 28, 2021 Status
active
WHOIS Server whois.arin.net AS Description MISU-231 - Michigan State University, US Abuse Email [email protected] Abuse Phone +1-517-432-6200 IPv4 Prefixes
7 prefixes · 787,456 addresses · 6 top-level Routing data as of 2026-10-06 00:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 35.8.0.0/13 | 35.8.0.0 – 35.15.255.255 | 524,288 |
| 35.12.240.0/21 | 35.12.240.0 – 35.12.247.255 | 2,048 |
| 35.20.0.0/14 | 35.20.0.0 – 35.23.255.255 | 262,144 |
| 192.108.188.0/24 | 192.108.188.0 – 192.108.188.255 | 256 |
| 192.108.190.0/24 | 192.108.190.0 – 192.108.190.255 | 256 |
| 192.108.191.0/24 | 192.108.191.0 – 192.108.191.255 | 256 |
| 192.231.113.0/24 | 192.231.113.0 – 192.231.113.255 | 256 |
IPv6 Prefixes
2 prefixes · 65,536 × /48 · 1 top-level Routing data as of 2026-10-06 00:00 UTC
| Prefix | Addresses |
|---|---|
| 2605:dd00:: | 296 |
| 2605:dd00:8000:: | 280 |
BGP Neighbours
4 unique neighbours · 3 upstream/peer · 1 downstream. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams). Upstream & peer side (3)
Downstream side (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS229 MERIT-AS-6 - Merit Network Inc. 260 332 0
Raw RDAP Response
{
"endAutnum": 231,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-03-11T11:36:37-04:00"
},
{
"eventAction": "registration",
"eventDate": "2004-01-14T10:17:30-05:00"
}
],
"handle": "ATS14-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ATS14-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/231"
},
{
"href": "https://whois.arin.net/rest/poc/ATS14-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/231"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Report abuse to [email protected], or contact http://abuse.msu.edu/"
],
"title": "Registration Comments"
},
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2026-03-11"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "MSU Information Technology\r\nComputer Center\r\n450 Auditorium Road, Room 400\nEast Lansing\nMI\n48824-1042\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Abuse Technical Support"
],
[
"org",
{},
"text",
"Michigan State University"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-517-432-6200"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-10-30T16:01:31-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-03-16T14:47:51-04:00"
}
],
"handle": "DAS32-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DAS32-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/231"
},
{
"href": "https://whois.arin.net/rest/poc/DAS32-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/231"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "MSU Information Technology\r\nComputer Center\r\n450 Auditorium Road, Room 400\nEast Lansing\nMI\n48824-1042\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"DNS Administrative Support"
],
[
"org",
{},
"text",
"Michigan State University"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-517-432-6200"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-12-04T15:29:29-05:00"
},
{
"eventAction": "registration",
"eventDate": "2004-01-14T10:17:39-05:00"
}
],
"handle": "DTS21-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DTS21-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/231"
},
{
"href": "https://whois.arin.net/rest/poc/DTS21-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/231"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "Information Technology Services\r\nComputer Center\r\n450 Auditorium Road, Room 400\nEast Lansing\nMI\n48824-1042\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"DNS Technical Support"
],
[
"org",
{},
"text",
"Michigan State University"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-517-432-6200"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-10-31T17:01:12-04:00"
},
{
"eventAction": "registration",
"eventDate": "1991-07-24T00:00:00-04:00"
}
],
"handle": "MISU",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MISU",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/231"
},
{
"href": "https://whois.arin.net/rest/org/MISU",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/231"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Michigan State University"
],
[
"adr",
{
"label": "IT Services\n450 Auditorium Rd., Suite 400\nEast Lansing\nMI\n48824\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-06-28T10:56:16-04:00"
},
{
"eventAction": "registration",
"eventDate": "2021-06-28T10:56:13-04:00"
}
],
"handle": "AS231",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/231",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/231"
},
{
"href": "https://whois.arin.net/rest/asn/AS231",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/231"
}
],
"name": "MISU-231",
"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/231"
}
],
"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/231"
}
],
"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": 231,
"status": [
"active"
]
} Contact details of private individuals are redacted.