IP Lookup ASN Lookup Learning Hub
Dashboard / ASN Lookup / AS11924

AS11924

Montana Opticom, LLC

ARIN US active Announced
More ASNs in the United States →
Organization
Montana Opticom, LLC
MONTANA-OPTICOM
Registered
Mar 06, 2007
19 years ago
IPv4 Prefixes
44
16,384 addresses
IPv6 Prefixes
1
65,536 × /48
BGP Neighbours
22
13 upstream/peer · 4 downstream · 6 collector-only

Registration

AS Number AS11924 AS Name MONTANA-OPTICOM Organization Montana Opticom, LLC Organization ID MONTA-16 Address 144 Quail Run Road, Bozeman, MT, 59718, United States Country United States (US) Registry ARIN Allocated Mar 06, 2007 Record Created Mar 06, 2007 Last Updated Mar 02, 2012 Status
active
WHOIS Server whois.arin.net AS Description MONTANA-OPTICOM - Montana Opticom, LLC, US Abuse Email [email protected] Abuse Phone +1-406-999-5000

IPv4 Prefixes

44 prefixes · 16,384 addresses · 10 top-level Routing data as of 2026-10-09 00:00 UTC

63.0.0.0/8 · 5 prefixes · 1,024 addresses
PrefixRangeAddresses
63.166.28.0/2263.166.28.0 – 63.166.31.2551,024
63.166.28.0/2463.166.28.0 – 63.166.28.255256
63.166.29.0/2463.166.29.0 – 63.166.29.255256
63.166.30.0/2463.166.30.0 – 63.166.30.255256
63.166.31.0/2463.166.31.0 – 63.166.31.255256
64.0.0.0/8 · 8 prefixes · 4,096 addresses
PrefixRangeAddresses
64.79.32.0/2064.79.32.0 – 64.79.47.2554,096
64.79.35.0/2464.79.35.0 – 64.79.35.255256
64.79.37.0/2464.79.37.0 – 64.79.37.255256
64.79.39.0/2464.79.39.0 – 64.79.39.255256
64.79.43.0/2464.79.43.0 – 64.79.43.255256
64.79.45.0/2464.79.45.0 – 64.79.45.255256
64.79.46.0/2364.79.46.0 – 64.79.47.255512
64.79.46.0/2464.79.46.0 – 64.79.46.255256
69.0.0.0/8 · 13 prefixes · 4,096 addresses
PrefixRangeAddresses
69.163.80.0/2069.163.80.0 – 69.163.95.2554,096
69.163.80.0/2469.163.80.0 – 69.163.80.255256
69.163.81.0/2469.163.81.0 – 69.163.81.255256
69.163.82.0/2469.163.82.0 – 69.163.82.255256
69.163.84.0/2469.163.84.0 – 69.163.84.255256
69.163.85.0/2469.163.85.0 – 69.163.85.255256
69.163.86.0/2369.163.86.0 – 69.163.87.255512
69.163.88.0/2469.163.88.0 – 69.163.88.255256
69.163.90.0/2469.163.90.0 – 69.163.90.255256
69.163.91.0/2469.163.91.0 – 69.163.91.255256
69.163.93.0/2469.163.93.0 – 69.163.93.255256
69.163.94.0/2469.163.94.0 – 69.163.94.255256
69.163.95.0/2469.163.95.0 – 69.163.95.255256
199.0.0.0/8 · 1 prefix · 256 addresses
PrefixRangeAddresses
199.2.135.0/24199.2.135.0 – 199.2.135.255256
204.0.0.0/8 · 5 prefixes · 2,048 addresses
PrefixRangeAddresses
204.250.80.0/21204.250.80.0 – 204.250.87.2552,048
204.250.82.0/24204.250.82.0 – 204.250.82.255256
204.250.83.0/24204.250.83.0 – 204.250.83.255256
204.250.84.0/23204.250.84.0 – 204.250.85.255512
204.250.86.0/23204.250.86.0 – 204.250.87.255512
205.0.0.0/8 · 1 prefix · 512 addresses
PrefixRangeAddresses
205.243.72.0/23205.243.72.0 – 205.243.73.255512
206.0.0.0/8 · 1 prefix · 1,024 addresses
PrefixRangeAddresses
206.228.140.0/22206.228.140.0 – 206.228.143.2551,024
208.0.0.0/8 · 10 prefixes · 3,328 addresses
PrefixRangeAddresses
208.14.180.0/24208.14.180.0 – 208.14.180.255256
208.75.140.0/22208.75.140.0 – 208.75.143.2551,024
208.75.140.0/24208.75.140.0 – 208.75.140.255256
208.75.141.0/24208.75.141.0 – 208.75.141.255256
208.75.142.0/24208.75.142.0 – 208.75.142.255256
208.75.143.0/24208.75.143.0 – 208.75.143.255256
208.83.40.0/21208.83.40.0 – 208.83.47.2552,048
208.83.40.0/24208.83.40.0 – 208.83.40.255256
208.83.41.0/24208.83.41.0 – 208.83.41.255256
208.83.47.0/24208.83.47.0 – 208.83.47.255256

IPv6 Prefixes

1 prefix · 65,536 × /48 Routing data as of 2026-10-09 00:00 UTC

PrefixAddresses
2607:faa0::/32296

BGP Neighbours

22 unique neighbours · 13 upstream/peer · 4 downstream · 6 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 (13)

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 LLC479857548
AS6461ZAYO-6461 - Zayo Bandwidth3396,53864
AS3356LEVEL3 - Level 3 Parent, LLC2714,05313
AS3257GTT-BACKBONE GTT Communications Inc.2242,79672
AS21858ASCENT-DATA-LLC - Ascent Data, LLC462310
AS9002RETN-AS RETN Limited191461
AS35280F5 F5 Networks SARL12590
AS137409GSLNETWORKS-AS-AP - GSL Networks Pty LTD11950
AS286KPN GTT Communications Inc.5492
AS7575AARNET-AS-AP - Australian Academic and Research Network (AARNet)5500
AS394256CLOUDSINGULARITY - Tech Futures Interactive Inc.5501
AS52025PARADOXNETWORKS-LIMITED ParadoxNetworks Limited4160
AS20326TERASWITCH - TeraSwitch Networks Inc.110

Downstream side (4)

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

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS22485MONTANA-OPTICOM-AS22485 - Montana Opticom, LLC2673370
AS40097PRINTINGFORLESS - Printingforless.com, Inc.2673370
AS396079—2450347
AS21858ASCENT-DATA-LLC - Ascent Data, LLC16720

Collector-only (6)

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
AS18106VIEWQWEST-SG-AP - Viewqwest Pte Ltd5500
AS24482SGGS-AS-AP - SG.GS51543
AS36236NETACTUATE - NetActuate, Inc5501
AS49544i3Dnet i3D.net B.V51022
AS1828UNITAS - Unitas Global101
AS34927iFog-GmbH iFog GmbH1300

Raw RDAP Response

{
  "endAutnum": 11924,
  "entities": [
    {
      "entities": [
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2025-10-02T20:05:36-04:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2009-02-26T15:24:03-05:00"
            }
          ],
          "handle": "MTOPT2-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/MTOPT2-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/11924"
            },
            {
              "href": "https://whois.arin.net/rest/poc/MTOPT2-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/11924"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "roles": [
            "abuse"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "144 Quail Run Road\nBozeman\nMT\n59718\nUnited States"
                },
                "text",
                [
                  "",
                  "",
                  "",
                  "",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "fn",
                {},
                "text",
                "MT-Opticom Abuse"
              ],
              [
                "org",
                {},
                "text",
                "Montana Opticom, LLC"
              ],
              [
                "kind",
                {},
                "text",
                "group"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+1-406-999-5000"
              ]
            ]
          ]
        },
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2025-10-02T20:05:25-04:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2006-03-07T14:06:57-05:00"
            }
          ],
          "handle": "MTOPT-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/MTOPT-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/11924"
            },
            {
              "href": "https://whois.arin.net/rest/poc/MTOPT-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/11924"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "roles": [
            "administrative"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "144 Quail Run Road\nBozeman\nMT\n59718\nUnited States"
                },
                "text",
                [
                  "",
                  "",
                  "",
                  "",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "fn",
                {},
                "text",
                "MT-Opticom"
              ],
              [
                "org",
                {},
                "text",
                "Montana Opticom, LLC"
              ],
              [
                "kind",
                {},
                "text",
                "group"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+1-406-999-5000"
              ]
            ]
          ]
        },
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2025-10-02T20:05:44-04:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2009-02-26T15:18:28-05:00"
            }
          ],
          "handle": "MTOPT1-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/MTOPT1-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/11924"
            },
            {
              "href": "https://whois.arin.net/rest/poc/MTOPT1-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/11924"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "roles": [
            "technical",
            "noc"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "144 Quail Run Road\nBozeman\nMT\n59718\nUnited States"
                },
                "text",
                [
                  "",
                  "",
                  "",
                  "",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "fn",
                {},
                "text",
                "MT-Opticom Support"
              ],
              [
                "org",
                {},
                "text",
                "Montana Opticom, LLC"
              ],
              [
                "kind",
                {},
                "text",
                "group"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+1-406-999-5000"
              ]
            ]
          ]
        }
      ],
      "events": [
        {
          "eventAction": "last changed",
          "eventDate": "2017-01-28T08:32:29-05:00"
        },
        {
          "eventAction": "registration",
          "eventDate": "2007-02-22T17:33:19-05:00"
        }
      ],
      "handle": "MONTA-16",
      "links": [
        {
          "href": "https://rdap.arin.net/registry/entity/MONTA-16",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.arin.net/registry/autnum/11924"
        },
        {
          "href": "https://whois.arin.net/rest/org/MONTA-16",
          "rel": "alternate",
          "type": "application/xml",
          "value": "https://rdap.arin.net/registry/autnum/11924"
        }
      ],
      "objectClassName": "entity",
      "port43": "whois.arin.net",
      "roles": [
        "registrant"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "Montana Opticom, LLC"
          ],
          [
            "adr",
            {
              "label": "144 Quail Run Road\nBozeman\nMT\n59718\nUnited States"
            },
            "text",
            [
              "",
              "",
              "",
              "",
              "",
              "",
              ""
            ]
          ],
          [
            "kind",
            {},
            "text",
            "org"
          ]
        ]
      ]
    },
    {
      "events": [
        {
          "eventAction": "last changed",
          "eventDate": "2025-10-02T20:05:25-04:00"
        },
        {
          "eventAction": "registration",
          "eventDate": "2006-03-07T14:06:57-05:00"
        }
      ],
      "handle": "MTOPT-ARIN",
      "links": [
        {
          "href": "https://rdap.arin.net/registry/entity/MTOPT-ARIN",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.arin.net/registry/autnum/11924"
        },
        {
          "href": "https://whois.arin.net/rest/poc/MTOPT-ARIN",
          "rel": "alternate",
          "type": "application/xml",
          "value": "https://rdap.arin.net/registry/autnum/11924"
        }
      ],
      "objectClassName": "entity",
      "port43": "whois.arin.net",
      "roles": [
        "technical"
      ],
      "status": [
        "validated"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "adr",
            {
              "label": "144 Quail Run Road\nBozeman\nMT\n59718\nUnited States"
            },
            "text",
            [
              "",
              "",
              "",
              "",
              "",
              "",
              ""
            ]
          ],
          [
            "fn",
            {},
            "text",
            "MT-Opticom"
          ],
          [
            "org",
            {},
            "text",
            "Montana Opticom, LLC"
          ],
          [
            "kind",
            {},
            "text",
            "group"
          ],
          [
            "email",
            {},
            "text",
            "[email protected]"
          ],
          [
            "email",
            {},
            "text",
            "[email protected]"
          ],
          [
            "tel",
            {
              "type": [
                "work",
                "voice"
              ]
            },
            "text",
            "+1-406-999-5000"
          ]
        ]
      ]
    }
  ],
  "events": [
    {
      "eventAction": "last changed",
      "eventDate": "2012-03-02T08:03:18-05:00"
    },
    {
      "eventAction": "registration",
      "eventDate": "2007-03-06T17:17:10-05:00"
    }
  ],
  "handle": "AS11924",
  "links": [
    {
      "href": "https://rdap.arin.net/registry/autnum/11924",
      "rel": "self",
      "type": "application/rdap+json",
      "value": "https://rdap.arin.net/registry/autnum/11924"
    },
    {
      "href": "https://whois.arin.net/rest/asn/AS11924",
      "rel": "alternate",
      "type": "application/xml",
      "value": "https://rdap.arin.net/registry/autnum/11924"
    }
  ],
  "name": "MONTANA-OPTICOM",
  "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/11924"
        }
      ],
      "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/11924"
        }
      ],
      "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": 11924,
  "status": [
    "active"
  ]
}

Contact details of private individuals are redacted.