Registration
IPv4 Prefixes
91 prefixes · 289,280 addresses · 75 top-level Routing data as of 2026-10-07 08:00 UTC
128.0.0.0/8 · 45 prefixes · 18,944 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 128.13.48.0/24 | 128.13.48.0 – 128.13.48.255 | 256 |
| 128.13.49.0/24 | 128.13.49.0 – 128.13.49.255 | 256 |
| 128.13.50.0/24 | 128.13.50.0 – 128.13.50.255 | 256 |
| 128.13.52.0/24 | 128.13.52.0 – 128.13.52.255 | 256 |
| 128.13.53.0/24 | 128.13.53.0 – 128.13.53.255 | 256 |
| 128.13.112.0/23 | 128.13.112.0 – 128.13.113.255 | 512 |
| 128.13.112.0/24 | 128.13.112.0 – 128.13.112.255 | 256 |
| 128.13.113.0/24 | 128.13.113.0 – 128.13.113.255 | 256 |
| 128.13.114.0/23 | 128.13.114.0 – 128.13.115.255 | 512 |
| 128.13.114.0/24 | 128.13.114.0 – 128.13.114.255 | 256 |
| 128.13.115.0/24 | 128.13.115.0 – 128.13.115.255 | 256 |
| 128.13.120.0/24 | 128.13.120.0 – 128.13.120.255 | 256 |
| 128.13.121.0/24 | 128.13.121.0 – 128.13.121.255 | 256 |
| 128.13.122.0/24 | 128.13.122.0 – 128.13.122.255 | 256 |
| 128.13.123.0/24 | 128.13.123.0 – 128.13.123.255 | 256 |
| 128.13.124.0/24 | 128.13.124.0 – 128.13.124.255 | 256 |
| 128.13.125.0/24 | 128.13.125.0 – 128.13.125.255 | 256 |
| 128.13.126.0/24 | 128.13.126.0 – 128.13.126.255 | 256 |
| 128.13.127.0/24 | 128.13.127.0 – 128.13.127.255 | 256 |
| 128.13.128.0/24 | 128.13.128.0 – 128.13.128.255 | 256 |
| 128.13.129.0/24 | 128.13.129.0 – 128.13.129.255 | 256 |
| 128.13.130.0/24 | 128.13.130.0 – 128.13.130.255 | 256 |
| 128.13.131.0/24 | 128.13.131.0 – 128.13.131.255 | 256 |
| 128.13.132.0/24 | 128.13.132.0 – 128.13.132.255 | 256 |
| 128.13.134.0/24 | 128.13.134.0 – 128.13.134.255 | 256 |
| 128.13.135.0/24 | 128.13.135.0 – 128.13.135.255 | 256 |
| 128.13.136.0/24 | 128.13.136.0 – 128.13.136.255 | 256 |
| 128.13.137.0/24 | 128.13.137.0 – 128.13.137.255 | 256 |
| 128.13.138.0/24 | 128.13.138.0 – 128.13.138.255 | 256 |
| 128.13.139.0/24 | 128.13.139.0 – 128.13.139.255 | 256 |
| 128.13.140.0/24 | 128.13.140.0 – 128.13.140.255 | 256 |
| 128.13.141.0/24 | 128.13.141.0 – 128.13.141.255 | 256 |
| 128.13.142.0/24 | 128.13.142.0 – 128.13.142.255 | 256 |
| 128.13.143.0/24 | 128.13.143.0 – 128.13.143.255 | 256 |
| 128.13.144.0/24 | 128.13.144.0 – 128.13.144.255 | 256 |
| 128.13.145.0/24 | 128.13.145.0 – 128.13.145.255 | 256 |
| 128.13.146.0/24 | 128.13.146.0 – 128.13.146.255 | 256 |
| 128.13.147.0/24 | 128.13.147.0 – 128.13.147.255 | 256 |
| 128.13.148.0/24 | 128.13.148.0 – 128.13.148.255 | 256 |
| 128.13.149.0/24 | 128.13.149.0 – 128.13.149.255 | 256 |
| 128.13.152.0/22 | 128.13.152.0 – 128.13.155.255 | 1,024 |
| 128.13.160.0/21 | 128.13.160.0 – 128.13.167.255 | 2,048 |
| 128.13.168.0/21 | 128.13.168.0 – 128.13.175.255 | 2,048 |
| 128.13.176.0/21 | 128.13.176.0 – 128.13.183.255 | 2,048 |
| 128.13.184.0/21 | 128.13.184.0 – 128.13.191.255 | 2,048 |
131.0.0.0/8 · 2 prefixes · 131,072 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 131.198.0.0/16 | 131.198.0.0 – 131.198.255.255 | 65,536 |
| 131.199.0.0/16 | 131.199.0.0 – 131.199.255.255 | 65,536 |
138.0.0.0/8 · 1 prefix · 256 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 138.127.57.0/24 | 138.127.57.0 – 138.127.57.255 | 256 |
140.0.0.0/8 · 2 prefixes · 768 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 140.157.66.0/24 | 140.157.66.0 – 140.157.66.255 | 256 |
| 140.157.218.0/23 | 140.157.218.0 – 140.157.219.255 | 512 |
151.0.0.0/8 · 2 prefixes · 65,536 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 151.131.0.0/17 | 151.131.0.0 – 151.131.127.255 | 32,768 |
| 151.131.128.0/17 | 151.131.128.0 – 151.131.255.255 | 32,768 |
162.0.0.0/8 · 11 prefixes · 65,536 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 162.36.0.0/16 | 162.36.0.0 – 162.36.255.255 | 65,536 |
| 162.36.4.0/24 | 162.36.4.0 – 162.36.4.255 | 256 |
| 162.36.5.0/24 | 162.36.5.0 – 162.36.5.255 | 256 |
| 162.36.6.0/24 | 162.36.6.0 – 162.36.6.255 | 256 |
| 162.36.7.0/24 | 162.36.7.0 – 162.36.7.255 | 256 |
| 162.36.8.0/24 | 162.36.8.0 – 162.36.8.255 | 256 |
| 162.36.9.0/24 | 162.36.9.0 – 162.36.9.255 | 256 |
| 162.36.10.0/24 | 162.36.10.0 – 162.36.10.255 | 256 |
| 162.36.11.0/24 | 162.36.11.0 – 162.36.11.255 | 256 |
| 162.36.12.0/24 | 162.36.12.0 – 162.36.12.255 | 256 |
| 162.36.14.0/24 | 162.36.14.0 – 162.36.14.255 | 256 |
192.0.0.0/8 · 4 prefixes · 1,024 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 192.27.4.0/24 | 192.27.4.0 – 192.27.4.255 | 256 |
| 192.249.36.0/24 | 192.249.36.0 – 192.249.36.255 | 256 |
| 192.249.37.0/24 | 192.249.37.0 – 192.249.37.255 | 256 |
| 192.249.49.0/24 | 192.249.49.0 – 192.249.49.255 | 256 |
198.0.0.0/8 · 5 prefixes · 1,536 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 198.151.224.0/23 | 198.151.224.0 – 198.151.225.255 | 512 |
| 198.151.226.0/24 | 198.151.226.0 – 198.151.226.255 | 256 |
| 198.212.186.0/24 | 198.212.186.0 – 198.212.186.255 | 256 |
| 198.212.187.0/24 | 198.212.187.0 – 198.212.187.255 | 256 |
| 198.212.188.0/24 | 198.212.188.0 – 198.212.188.255 | 256 |
199.0.0.0/8 · 13 prefixes · 3,328 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 199.33.65.0/24 | 199.33.65.0 – 199.33.65.255 | 256 |
| 199.33.88.0/24 | 199.33.88.0 – 199.33.88.255 | 256 |
| 199.33.92.0/24 | 199.33.92.0 – 199.33.92.255 | 256 |
| 199.46.128.0/24 | 199.46.128.0 – 199.46.128.255 | 256 |
| 199.46.167.0/24 | 199.46.167.0 – 199.46.167.255 | 256 |
| 199.46.168.0/24 | 199.46.168.0 – 199.46.168.255 | 256 |
| 199.46.197.0/24 | 199.46.197.0 – 199.46.197.255 | 256 |
| 199.191.40.0/24 | 199.191.40.0 – 199.191.40.255 | 256 |
| 199.191.41.0/24 | 199.191.41.0 – 199.191.41.255 | 256 |
| 199.191.42.0/24 | 199.191.42.0 – 199.191.42.255 | 256 |
| 199.191.43.0/24 | 199.191.43.0 – 199.191.43.255 | 256 |
| 199.191.44.0/24 | 199.191.44.0 – 199.191.44.255 | 256 |
| 199.191.46.0/24 | 199.191.46.0 – 199.191.46.255 | 256 |
205.0.0.0/8 · 6 prefixes · 1,280 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 205.175.225.0/24 | 205.175.225.0 – 205.175.225.255 | 256 |
| 205.175.226.0/24 | 205.175.226.0 – 205.175.226.255 | 256 |
| 205.175.227.0/24 | 205.175.227.0 – 205.175.227.255 | 256 |
| 205.175.228.0/23 | 205.175.228.0 – 205.175.229.255 | 512 |
| 205.175.228.0/24 | 205.175.228.0 – 205.175.228.255 | 256 |
| 205.175.229.0/24 | 205.175.229.0 – 205.175.229.255 | 256 |
IPv6 Prefixes
1 prefix · 1 × /48 Routing data as of 2026-10-07 08:00 UTC
| Prefix | Addresses |
|---|---|
| 2620:b4:: | 280 |
BGP Neighbours
9 unique neighbours · 6 upstream/peer · 3 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 (6)
AS Name AS paths IPv4 sightings IPv6 sightings AS3356 LEVEL3 - Level 3 Parent, LLC 1,060 36,302 0 AS5580 GTT-ASIA GTT Communications Netherlands B.V. 926 1,798 329 AS4755 TATACOMM-AS - TATA Communications formerly VSNL is Leading ISP 844 1,710 0 AS2686 ATGS-MMD-AS - AT&T Enterprises, LLC 361 3,164 0 AS3257 GTT-BACKBONE GTT Communications Inc. 28 68 0 AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC 15 302 0 Downstream side (3)
Raw RDAP Response
{
"endAutnum": 1341,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-21T13:44:48-04:00"
},
{
"eventAction": "registration",
"eventDate": "2017-05-10T13:58:57-04:00"
}
],
"handle": "KENTL2-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/KENTL2-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1341"
},
{
"href": "https://whois.arin.net/rest/poc/KENTL2-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1341"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-05-01T15:33:43-04:00"
},
{
"eventAction": "registration",
"eventDate": "2010-03-24T11:45:28-04:00"
}
],
"handle": "DRS97-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DRS97-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1341"
},
{
"href": "https://whois.arin.net/rest/poc/DRS97-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1341"
}
],
"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 2025-05-01"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse",
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "400 Collins Rd NE\r\nM/S 131-101\nCedar Rapids\nIA\n52498\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"David Ray Siefer"
],
[
"n",
{},
"text",
[
"Siefer",
"David",
"Ray",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-319-295-9082"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-02-16T10:22:48-05:00"
},
{
"eventAction": "registration",
"eventDate": "2023-01-18T14:21:43-05:00"
}
],
"handle": "KNAPP139-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/KNAPP139-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1341"
},
{
"href": "https://whois.arin.net/rest/poc/KNAPP139-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1341"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-02-25T10:20:55-05:00"
},
{
"eventAction": "registration",
"eventDate": "2011-05-25T17:27:28-04:00"
}
],
"handle": "STONE9-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/STONE9-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1341"
},
{
"href": "https://whois.arin.net/rest/poc/STONE9-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1341"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-03T16:37:51-04:00"
},
{
"eventAction": "registration",
"eventDate": "2018-10-01T13:59:30-04:00"
}
],
"handle": "DAGLI9-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DAGLI9-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1341"
},
{
"href": "https://whois.arin.net/rest/poc/DAGLI9-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1341"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-09T09:25:35-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-09-08T17:51:58-04:00"
}
],
"handle": "LAB21-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/LAB21-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1341"
},
{
"href": "https://whois.arin.net/rest/poc/LAB21-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1341"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-23T13:31:06-05:00"
},
{
"eventAction": "registration",
"eventDate": "2009-11-23T09:54:25-05:00"
}
],
"handle": "NETWO3542-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NETWO3542-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1341"
},
{
"href": "https://whois.arin.net/rest/poc/NETWO3542-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1341"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Standard Hours: 0700-1900 CST"
],
"title": "Registration Comments"
}
],
"roles": [
"technical",
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "400 Collins Rd NE\nCedar Rapids\nIA\n52498\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Network Administration"
],
[
"org",
{},
"text",
"Rockwell Collins Inc"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-319-295-1557"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-11-19T13:30:21-05:00"
},
{
"eventAction": "registration",
"eventDate": "2018-08-10T17:40:15-04:00"
}
],
"handle": "ROCKW-11-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ROCKW-11-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1341"
},
{
"href": "https://whois.arin.net/rest/org/ROCKW-11-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1341"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Rockwell Collins, Inc."
],
[
"adr",
{
"label": "400 Collins Rd N.E.\nCedar Rapids\nIA\n52498\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2018-08-28T14:51:08-04:00"
},
{
"eventAction": "registration",
"eventDate": "1991-08-23T00:00:00-04:00"
}
],
"handle": "AS1341",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/1341",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1341"
},
{
"href": "https://whois.arin.net/rest/asn/AS1341",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1341"
}
],
"name": "ROCKWELLCOLLINS-AS",
"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/1341"
}
],
"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/1341"
}
],
"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": 1341,
"status": [
"active"
]
} Contact details of private individuals are redacted.