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AS1280

Internet Systems Consortium, Inc.

ARIN US active Announced
More ASNs in the United States →
Organization
Internet Systems Consortium, Inc.
ISC-AS-1280
Registered
Jul 31, 1991
35 years ago
IPv4 Prefixes
92
23,296 addresses
IPv6 Prefixes
7
65,536 × /48
BGP Neighbours
43
5 upstream/peer · 3 downstream · 37 collector-only

Registration

AS Number AS1280 AS Name ISC-AS-1280 Organization Internet Systems Consortium, Inc. Organization ID ISC-94-Z Address PO Box 360, Newmarket, NH, 03857, United States Country United States (US) Registry ARIN Allocated Jul 31, 1991 Record Created Jul 31, 1991 Last Updated Apr 02, 2012 Status
active
WHOIS Server whois.arin.net AS Description ISC-AS-1280 - Internet Systems Consortium, Inc., US Abuse Email [email protected] Abuse Phone +1-650-423-1300

IPv4 Prefixes

92 prefixes · 23,296 addresses · 84 top-level Routing data as of 2026-10-06 16:00 UTC

149.0.0.0/8 · 81 prefixes · 20,736 addresses
PrefixRangeAddresses
149.20.1.0/24149.20.1.0 – 149.20.1.255256
149.20.6.0/24149.20.6.0 – 149.20.6.255256
149.20.7.0/24149.20.7.0 – 149.20.7.255256
149.20.8.0/24149.20.8.0 – 149.20.8.255256
149.20.10.0/24149.20.10.0 – 149.20.10.255256
149.20.12.0/24149.20.12.0 – 149.20.12.255256
149.20.13.0/24149.20.13.0 – 149.20.13.255256
149.20.14.0/24149.20.14.0 – 149.20.14.255256
149.20.15.0/24149.20.15.0 – 149.20.15.255256
149.20.16.0/24149.20.16.0 – 149.20.16.255256
149.20.17.0/24149.20.17.0 – 149.20.17.255256
149.20.18.0/24149.20.18.0 – 149.20.18.255256
149.20.19.0/24149.20.19.0 – 149.20.19.255256
149.20.20.0/24149.20.20.0 – 149.20.20.255256
149.20.21.0/24149.20.21.0 – 149.20.21.255256
149.20.22.0/24149.20.22.0 – 149.20.22.255256
149.20.23.0/24149.20.23.0 – 149.20.23.255256
149.20.24.0/24149.20.24.0 – 149.20.24.255256
149.20.25.0/24149.20.25.0 – 149.20.25.255256
149.20.26.0/24149.20.26.0 – 149.20.26.255256
149.20.27.0/24149.20.27.0 – 149.20.27.255256
149.20.28.0/24149.20.28.0 – 149.20.28.255256
149.20.29.0/24149.20.29.0 – 149.20.29.255256
149.20.30.0/24149.20.30.0 – 149.20.30.255256
149.20.31.0/24149.20.31.0 – 149.20.31.255256
149.20.32.0/24149.20.32.0 – 149.20.32.255256
149.20.33.0/24149.20.33.0 – 149.20.33.255256
149.20.34.0/24149.20.34.0 – 149.20.34.255256
149.20.35.0/24149.20.35.0 – 149.20.35.255256
149.20.36.0/24149.20.36.0 – 149.20.36.255256
149.20.37.0/24149.20.37.0 – 149.20.37.255256
149.20.38.0/24149.20.38.0 – 149.20.38.255256
149.20.39.0/24149.20.39.0 – 149.20.39.255256
149.20.40.0/24149.20.40.0 – 149.20.40.255256
149.20.41.0/24149.20.41.0 – 149.20.41.255256
149.20.42.0/24149.20.42.0 – 149.20.42.255256
149.20.43.0/24149.20.43.0 – 149.20.43.255256
149.20.44.0/24149.20.44.0 – 149.20.44.255256
149.20.45.0/24149.20.45.0 – 149.20.45.255256
149.20.46.0/24149.20.46.0 – 149.20.46.255256
149.20.47.0/24149.20.47.0 – 149.20.47.255256
149.20.48.0/24149.20.48.0 – 149.20.48.255256
149.20.49.0/24149.20.49.0 – 149.20.49.255256
149.20.50.0/24149.20.50.0 – 149.20.50.255256
149.20.51.0/24149.20.51.0 – 149.20.51.255256
149.20.52.0/24149.20.52.0 – 149.20.52.255256
149.20.53.0/24149.20.53.0 – 149.20.53.255256
149.20.54.0/24149.20.54.0 – 149.20.54.255256
149.20.55.0/24149.20.55.0 – 149.20.55.255256
149.20.56.0/24149.20.56.0 – 149.20.56.255256
149.20.58.0/24149.20.58.0 – 149.20.58.255256
149.20.59.0/24149.20.59.0 – 149.20.59.255256
149.20.60.0/24149.20.60.0 – 149.20.60.255256
149.20.61.0/24149.20.61.0 – 149.20.61.255256
149.20.62.0/24149.20.62.0 – 149.20.62.255256
149.20.63.0/24149.20.63.0 – 149.20.63.255256
149.20.64.0/24149.20.64.0 – 149.20.64.255256
149.20.65.0/24149.20.65.0 – 149.20.65.255256
149.20.72.0/24149.20.72.0 – 149.20.72.255256
149.20.73.0/24149.20.73.0 – 149.20.73.255256
149.20.74.0/24149.20.74.0 – 149.20.74.255256
149.20.75.0/24149.20.75.0 – 149.20.75.255256
149.20.76.0/24149.20.76.0 – 149.20.76.255256
149.20.77.0/24149.20.77.0 – 149.20.77.255256
149.20.78.0/24149.20.78.0 – 149.20.78.255256
149.20.79.0/24149.20.79.0 – 149.20.79.255256
149.20.80.0/24149.20.80.0 – 149.20.80.255256
149.20.81.0/24149.20.81.0 – 149.20.81.255256
149.20.82.0/24149.20.82.0 – 149.20.82.255256
149.20.83.0/24149.20.83.0 – 149.20.83.255256
149.20.84.0/24149.20.84.0 – 149.20.84.255256
149.20.85.0/24149.20.85.0 – 149.20.85.255256
149.20.86.0/24149.20.86.0 – 149.20.86.255256
149.20.87.0/24149.20.87.0 – 149.20.87.255256
149.20.88.0/24149.20.88.0 – 149.20.88.255256
149.20.90.0/24149.20.90.0 – 149.20.90.255256
149.20.91.0/24149.20.91.0 – 149.20.91.255256
149.20.92.0/24149.20.92.0 – 149.20.92.255256
149.20.93.0/24149.20.93.0 – 149.20.93.255256
149.20.94.0/24149.20.94.0 – 149.20.94.255256
149.20.95.0/24149.20.95.0 – 149.20.95.255256
192.0.0.0/8 · 2 prefixes · 512 addresses
PrefixRangeAddresses
192.111.107.0/24192.111.107.0 – 192.111.107.255256
192.158.252.0/24192.158.252.0 – 192.158.252.255256
204.0.0.0/8 · 9 prefixes · 2,048 addresses
PrefixRangeAddresses
204.152.184.0/21204.152.184.0 – 204.152.191.2552,048
204.152.184.0/24204.152.184.0 – 204.152.184.255256
204.152.185.0/24204.152.185.0 – 204.152.185.255256
204.152.186.0/24204.152.186.0 – 204.152.186.255256
204.152.187.0/24204.152.187.0 – 204.152.187.255256
204.152.188.0/24204.152.188.0 – 204.152.188.255256
204.152.189.0/24204.152.189.0 – 204.152.189.255256
204.152.190.0/24204.152.190.0 – 204.152.190.255256
204.152.191.0/24204.152.191.0 – 204.152.191.255256

IPv6 Prefixes

7 prefixes · 65,536 × /48 · 1 top-level Routing data as of 2026-10-06 16:00 UTC

PrefixAddresses
2001:4f8::/32296
2001:4f8::/48280
2001:4f8:4::/46282
2001:4f8:4::/48280
2001:4f8:8::/48280
2001:4f8:fffe::/48280
2001:4f8:ffff::/48280

BGP Neighbours

43 unique neighbours · 5 upstream/peer · 3 downstream · 37 collector-only. 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.

Upstream & peer side (5)

Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers.

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS6939HURRICANE - Hurricane Electric LLC109,544783,417189,295
AS6762SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.15,79187,64917,540
AS1299TWELVE99 Arelion Sweden AB15,462132,92333,282
AS2914NTT-DATA-2914 - NTT America, Inc.10,75773,21412,988
AS4637ASN-TELSTRA-GLOBAL - Telstra Global1,96512,8610

Downstream side (3)

Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams).

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS30133ISC-F-AS - Internet Systems Consortium, Inc.32714,89915,081
AS24151CNNIC-CRITICAL-AP - China Internet Network Infomation Center3222,0481,721
AS3557ISC-AS - Internet Systems Consortium, Inc.433834

Collector-only (37)

Networks seen to the left of this AS only when they peer directly with a RIPE RIS route collector, so the adjacency may be an artefact of that peering; many of them also appear on the downstream side.

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS9498BBIL-AP - BHARTI Airtel Ltd.3,40422,8049,746
AS7922COMCAST-7922 - Comcast Cable Communications, LLC1,3274,4483,091
AS13335CLOUDFLARENET - Cloudflare, Inc.1,0127,426571
AS32787PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.7166,156229
AS11164INTERNET2-I2PX - Internet24331,857197
AS16276OVH OVH SAS2341,10030
AS3292TDC TDC Holding A/S11557569
AS4648SPARK-NZ - Global-Gateway Internet107953140
AS38158CBN-AS-ID - PT. Cyberindo Aditama90360288
AS9680HINETUSA - HiNet Service Center in U.S.A74767158
AS11404AS-WAVE-1 - Wave Broadband56083
AS16509AMAZON-02 - Amazon.com, Inc.542,9891,167
AS55818MCIX-AS-AP - MC-IX Matrix Internet Exchange RS-14918525
AS199524GCORE G-Core Labs S.A.4013031
AS49544i3Dnet i3D.net B.V3520390
AS10310YAHOO-1 - Yahoo Holdings Inc.2824920
AS19151BBO-1 - BroadbandONE, LLC288755
AS42WOODYNET-1 - WoodyNet, Inc.610276
AS7342VERISIGN-AS - VeriSign Infrastructure & Operations31717
AS8674NETNOD-IX Netnod AB354
AS41095IPTP IPTP LTD30226
AS714APPLE-ENGINEERING - Apple Inc.21,3580
AS1248HERE HERE Global BV270
AS9924TFN-TW - Taiwan Fixed Network, Telco and Network Service Provider.207
AS14061DIGITALOCEAN-ASN - DigitalOcean, LLC21706
AS22697ROBLOX-PRODUCTION - Roblox2106
AS3557ISC-AS - Internet Systems Consortium, Inc.122
AS3856PCH-AS - Packet Clearing House, Inc.111
AS7091VIANET-ASN - Next Level Connect120
AS24151CNNIC-CRITICAL-AP - China Internet Network Infomation Center11411
AS36692CISCO-UMBRELLA - Cisco OpenDNS, LLC13015
AS40627RC-COLO1 - RingCentral Inc1120
AS45102ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd.1210
AS57976BLIZZARD Blizzard Entertainment, Inc1113
AS62955EBAYMTBB - eBay, Inc141
AS132203TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue11811
AS397295CITYOFPALOALTO - City of Palo Alto110

Raw RDAP Response

{
  "endAutnum": 1280,
  "entities": [
    {
      "entities": [
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2026-08-31T07:01:47-04:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2003-05-15T01:00:02-04:00"
            }
          ],
          "handle": "ISCAT-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/ISCAT-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/1280"
            },
            {
              "href": "https://whois.arin.net/rest/poc/ISCAT-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/1280"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "remarks": [
            {
              "description": [
                "INOC DBA 3557"
              ],
              "title": "Registration Comments"
            }
          ],
          "roles": [
            "abuse"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "PO Box 360\nNewmarket\nNH\n03857\nUnited States"
                },
                "text",
                [
                  "",
                  "",
                  "",
                  "",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "fn",
                {},
                "text",
                "Internet Systems Consortium Abuse Team"
              ],
              [
                "org",
                {},
                "text",
                "Internet Systems Consortium, Inc."
              ],
              [
                "kind",
                {},
                "text",
                "group"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+1-650-423-1300"
              ]
            ]
          ]
        },
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2025-11-02T08:05:49-05:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "1998-03-23T23:25:54-05:00"
            }
          ],
          "handle": "RA15-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/RA15-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/1280"
            },
            {
              "href": "https://whois.arin.net/rest/poc/RA15-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/1280"
            }
          ],
          "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": "2025-11-23T19:11:59-05:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2003-05-15T00:00:03-04:00"
            }
          ],
          "handle": "ISCN-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/ISCN-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/1280"
            },
            {
              "href": "https://whois.arin.net/rest/poc/ISCN-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/1280"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "remarks": [
            {
              "description": [
                "Mail to [email protected] will open a ticket."
              ],
              "title": "Registration Comments"
            }
          ],
          "roles": [
            "technical",
            "noc"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "PO Box 360\nNewmarket\nNH\n03857\nUnited States"
                },
                "text",
                [
                  "",
                  "",
                  "",
                  "",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "fn",
                {},
                "text",
                "Internet Systems Consortium NOC"
              ],
              [
                "org",
                {},
                "text",
                "Internet Systems Consortium, Inc."
              ],
              [
                "kind",
                {},
                "text",
                "group"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+1-650-423-1310"
              ]
            ]
          ]
        },
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2026-04-15T08:39:54-04:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2018-04-16T13:41:58-04:00"
            }
          ],
          "handle": "JSO127-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/JSO127-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/1280"
            },
            {
              "href": "https://whois.arin.net/rest/poc/JSO127-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/1280"
            }
          ],
          "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": "2026-01-26T09:35:54-05:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2019-11-11T16:50:47-05:00"
            }
          ],
          "handle": "BELLI82-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/BELLI82-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/1280"
            },
            {
              "href": "https://whois.arin.net/rest/poc/BELLI82-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/1280"
            }
          ],
          "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": "2024-01-03T12:40:31-05:00"
        },
        {
          "eventAction": "registration",
          "eventDate": "2007-11-08T17:04:15-05:00"
        }
      ],
      "handle": "ISC-94-Z",
      "links": [
        {
          "href": "https://rdap.arin.net/registry/entity/ISC-94-Z",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.arin.net/registry/autnum/1280"
        },
        {
          "href": "https://whois.arin.net/rest/org/ISC-94-Z",
          "rel": "alternate",
          "type": "application/xml",
          "value": "https://rdap.arin.net/registry/autnum/1280"
        }
      ],
      "objectClassName": "entity",
      "port43": "whois.arin.net",
      "roles": [
        "registrant"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "Internet Systems Consortium, Inc."
          ],
          [
            "adr",
            {
              "label": "PO Box 360\nNewmarket\nNH\n03857\nUnited States"
            },
            "text",
            [
              "",
              "",
              "",
              "",
              "",
              "",
              ""
            ]
          ],
          [
            "kind",
            {},
            "text",
            "org"
          ]
        ]
      ]
    }
  ],
  "events": [
    {
      "eventAction": "last changed",
      "eventDate": "2012-04-02T10:31:36-04:00"
    },
    {
      "eventAction": "registration",
      "eventDate": "1991-07-31T00:00:00-04:00"
    }
  ],
  "handle": "AS1280",
  "links": [
    {
      "href": "https://rdap.arin.net/registry/autnum/1280",
      "rel": "self",
      "type": "application/rdap+json",
      "value": "https://rdap.arin.net/registry/autnum/1280"
    },
    {
      "href": "https://whois.arin.net/rest/asn/AS1280",
      "rel": "alternate",
      "type": "application/xml",
      "value": "https://rdap.arin.net/registry/autnum/1280"
    }
  ],
  "name": "ISC-AS-1280",
  "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/1280"
        }
      ],
      "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/1280"
        }
      ],
      "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": 1280,
  "status": [
    "active"
  ]
}

Contact details of private individuals are redacted.