AS16989
The University of Tennessee Health Science Center
ARIN US active Announced
More ASNs in the United States → Organization
The University of Tennessee Health Science Center
UTHSC
Registered
Jul 11, 2000
26 years ago
IPv4 Prefixes
8
131,584 addresses
IPv6 Prefixes
0
BGP Neighbours
3
3 upstream/peer · 0 downstream
Registration
AS Number AS16989 AS Name UTHSC Organization The University of Tennessee Health Science Center Organization ID UNIVER-5 Address 920 Madison Avenue, Memphis, TN, 38163, United States Country United States (US) Registry ARIN Allocated Jul 11, 2000 Record Created Jul 11, 2000 Last Updated Jun 06, 2025 Status
active
WHOIS Server whois.arin.net AS Description UTHSC - The University of Tennessee Health Science Center, US Abuse Email [email protected] Abuse Phone +1-901-448-6534 IPv4 Prefixes
8 prefixes · 131,584 addresses · 4 top-level Routing data as of 2026-10-09 16:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 12.204.200.0/24 | 12.204.200.0 – 12.204.200.255 | 256 |
| 128.169.0.0/16 | 128.169.0.0 – 128.169.255.255 | 65,536 |
| 128.169.0.0/17 | 128.169.0.0 – 128.169.127.255 | 32,768 |
| 128.169.128.0/17 | 128.169.128.0 – 128.169.255.255 | 32,768 |
| 160.37.0.0/16 | 160.37.0.0 – 160.37.255.255 | 65,536 |
| 160.37.0.0/17 | 160.37.0.0 – 160.37.127.255 | 32,768 |
| 160.37.128.0/17 | 160.37.128.0 – 160.37.255.255 | 32,768 |
| 199.164.138.0/24 | 199.164.138.0 – 199.164.138.255 | 256 |
IPv6 Prefixes
This AS does not currently announce any IPv6 prefixes.
BGP Neighbours
3 unique neighbours · 3 upstream/peer · 0 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. Upstream & peer side (3)
Raw RDAP Response
{
"endAutnum": 16989,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-07-03T10:21:01-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-12-20T13:27:52-05:00"
}
],
"handle": "JMP40-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/JMP40-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/16989"
},
{
"href": "https://whois.arin.net/rest/poc/JMP40-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/16989"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative",
"dns",
"routing",
"technical",
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-10-29T14:07:59-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-10-29T14:07:59-04:00"
}
],
"handle": "CMS55-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CMS55-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/16989"
},
{
"href": "https://whois.arin.net/rest/poc/CMS55-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/16989"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"dns",
"technical",
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-07-20T10:33:36-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-07-20T10:33:36-04:00"
}
],
"handle": "UIS6-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UIS6-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/16989"
},
{
"href": "https://whois.arin.net/rest/poc/UIS6-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/16989"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"UTHSC IT Security group, handles "
],
"title": "Registration Comments"
},
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2024-07-19"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "877 Madison Avenue\nMemphis\nTN\n38103\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"UTHSC IT Security"
],
[
"org",
{},
"text",
"The University of Tennessee Health Science Center"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-901-448-6534"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-10-29T14:37:01-04:00"
},
{
"eventAction": "registration",
"eventDate": "1989-03-10T00:00:00-05:00"
}
],
"handle": "UNIVER-5",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UNIVER-5",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/16989"
},
{
"href": "https://whois.arin.net/rest/org/UNIVER-5",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/16989"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"UT System Personnel Lookup is available at: https://directory.tennessee.edu"
],
"title": "Registration Comments"
}
],
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"The University of Tennessee Health Science Center"
],
[
"adr",
{
"label": "920 Madison Avenue\nMemphis\nTN\n38163\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-06-06T07:59:04-04:00"
},
{
"eventAction": "registration",
"eventDate": "2000-07-11T00:00:00-04:00"
}
],
"handle": "AS16989",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/16989",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/16989"
},
{
"href": "https://whois.arin.net/rest/asn/AS16989",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/16989"
}
],
"name": "UTHSC",
"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/16989"
}
],
"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/16989"
}
],
"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": 16989,
"status": [
"active"
]
} Contact details of private individuals are redacted.