IP Lookup ASN Lookup Learning Hub
Dashboard / ASN Lookup / AS398704

AS398704

STACKS INC

ARIN US active Announced
More ASNs in the United States →
Organization
STACKS INC
STACKSINC-BACKBONE
Registered
Aug 13, 2020
6 years ago
IPv4 Prefixes
97
22,016 addresses
IPv6 Prefixes
17
16,385 × /48
BGP Neighbours
65
37 upstream/peer · 8 downstream · 20 collector-only

Registration

AS Number AS398704 AS Name STACKSINC-BACKBONE Organization STACKS INC Organization ID STACK-10 Address 1665 LOGAN ST, DENVER, CO, 80203, United States Country United States (US) Registry ARIN Allocated Aug 13, 2020 Record Created Aug 13, 2020 Last Updated Sep 27, 2024 Status
active
WHOIS Server whois.arin.net AS Description STACKSINC-BACKBONE - STACKS INC, US Remarks https://www.stacksinc.net, Standard NOC hours 24H, GeoFeed https://www.stacksinc.net/geofeed.csv Abuse Email [email protected] Abuse Phone +43423455

IPv4 Prefixes

97 prefixes · 22,016 addresses · 32 top-level Routing data as of 2026-10-09 00:00 UTC

38.0.0.0/8 · 31 prefixes · 7,168 addresses
PrefixRangeAddresses
38.46.72.0/2138.46.72.0 – 38.46.79.2552,048
38.46.72.0/2438.46.72.0 – 38.46.72.255256
38.46.73.0/2438.46.73.0 – 38.46.73.255256
38.46.74.0/2438.46.74.0 – 38.46.74.255256
38.46.75.0/2438.46.75.0 – 38.46.75.255256
38.46.76.0/2438.46.76.0 – 38.46.76.255256
38.46.77.0/2438.46.77.0 – 38.46.77.255256
38.79.16.0/2138.79.16.0 – 38.79.23.2552,048
38.79.16.0/2438.79.16.0 – 38.79.16.255256
38.79.17.0/2438.79.17.0 – 38.79.17.255256
38.79.18.0/2438.79.18.0 – 38.79.18.255256
38.79.19.0/2438.79.19.0 – 38.79.19.255256
38.79.20.0/2438.79.20.0 – 38.79.20.255256
38.79.21.0/2438.79.21.0 – 38.79.21.255256
38.79.22.0/2438.79.22.0 – 38.79.22.255256
38.79.23.0/2438.79.23.0 – 38.79.23.255256
38.92.68.0/2238.92.68.0 – 38.92.71.2551,024
38.92.68.0/2438.92.68.0 – 38.92.68.255256
38.92.69.0/2438.92.69.0 – 38.92.69.255256
38.92.70.0/2438.92.70.0 – 38.92.70.255256
38.92.71.0/2438.92.71.0 – 38.92.71.255256
38.181.80.0/2238.181.80.0 – 38.181.83.2551,024
38.181.80.0/2438.181.80.0 – 38.181.80.255256
38.181.81.0/2438.181.81.0 – 38.181.81.255256
38.181.82.0/2438.181.82.0 – 38.181.82.255256
38.181.83.0/2438.181.83.0 – 38.181.83.255256
38.181.84.0/2438.181.84.0 – 38.181.84.255256
38.181.85.0/2438.181.85.0 – 38.181.85.255256
38.181.86.0/2338.181.86.0 – 38.181.87.255512
38.181.86.0/2438.181.86.0 – 38.181.86.255256
38.181.87.0/2438.181.87.0 – 38.181.87.255256
45.0.0.0/8 · 10 prefixes · 2,304 addresses
PrefixRangeAddresses
45.123.192.0/2445.123.192.0 – 45.123.192.255256
45.202.216.0/2145.202.216.0 – 45.202.223.2552,048
45.202.216.0/2445.202.216.0 – 45.202.216.255256
45.202.217.0/2445.202.217.0 – 45.202.217.255256
45.202.218.0/2445.202.218.0 – 45.202.218.255256
45.202.219.0/2445.202.219.0 – 45.202.219.255256
45.202.220.0/2445.202.220.0 – 45.202.220.255256
45.202.221.0/2445.202.221.0 – 45.202.221.255256
45.202.222.0/2445.202.222.0 – 45.202.222.255256
45.202.223.0/2445.202.223.0 – 45.202.223.255256
103.0.0.0/8 · 14 prefixes · 3,072 addresses
PrefixRangeAddresses
103.72.120.0/24103.72.120.0 – 103.72.120.255256
103.72.122.0/24103.72.122.0 – 103.72.122.255256
103.167.60.0/23103.167.60.0 – 103.167.61.255512
103.167.60.0/24103.167.60.0 – 103.167.60.255256
103.167.61.0/24103.167.61.0 – 103.167.61.255256
103.167.64.0/23103.167.64.0 – 103.167.65.255512
103.167.64.0/24103.167.64.0 – 103.167.64.255256
103.167.65.0/24103.167.65.0 – 103.167.65.255256
103.173.224.0/24103.173.224.0 – 103.173.224.255256
103.192.36.0/23103.192.36.0 – 103.192.37.255512
103.232.214.0/23103.232.214.0 – 103.232.215.255512
103.232.214.0/24103.232.214.0 – 103.232.214.255256
103.232.215.0/24103.232.215.0 – 103.232.215.255256
103.233.179.0/24103.233.179.0 – 103.233.179.255256
113.0.0.0/8 · 2 prefixes · 512 addresses
PrefixRangeAddresses
113.203.217.0/24113.203.217.0 – 113.203.217.255256
113.203.220.0/24113.203.220.0 – 113.203.220.255256
115.0.0.0/8 · 1 prefix · 256 addresses
PrefixRangeAddresses
115.167.31.0/24115.167.31.0 – 115.167.31.255256
154.0.0.0/8 · 12 prefixes · 2,048 addresses
PrefixRangeAddresses
154.92.128.0/22154.92.128.0 – 154.92.131.2551,024
154.92.128.0/24154.92.128.0 – 154.92.128.255256
154.92.129.0/24154.92.129.0 – 154.92.129.255256
154.92.130.0/24154.92.130.0 – 154.92.130.255256
154.92.131.0/24154.92.131.0 – 154.92.131.255256
154.92.132.0/22154.92.132.0 – 154.92.135.2551,024
154.92.132.0/23154.92.132.0 – 154.92.133.255512
154.92.132.0/24154.92.132.0 – 154.92.132.255256
154.92.133.0/24154.92.133.0 – 154.92.133.255256
154.92.134.0/23154.92.134.0 – 154.92.135.255512
154.92.134.0/24154.92.134.0 – 154.92.134.255256
154.92.135.0/24154.92.135.0 – 154.92.135.255256
156.0.0.0/8 · 3 prefixes · 512 addresses
PrefixRangeAddresses
156.245.192.0/23156.245.192.0 – 156.245.193.255512
156.245.192.0/24156.245.192.0 – 156.245.192.255256
156.245.193.0/24156.245.193.0 – 156.245.193.255256
180.0.0.0/8 · 4 prefixes · 1,024 addresses
PrefixRangeAddresses
180.223.124.0/24180.223.124.0 – 180.223.124.255256
180.223.125.0/24180.223.125.0 – 180.223.125.255256
180.223.126.0/24180.223.126.0 – 180.223.126.255256
180.223.127.0/24180.223.127.0 – 180.223.127.255256
204.0.0.0/8 · 5 prefixes · 1,024 addresses
PrefixRangeAddresses
204.29.228.0/22204.29.228.0 – 204.29.231.2551,024
204.29.228.0/24204.29.228.0 – 204.29.228.255256
204.29.229.0/24204.29.229.0 – 204.29.229.255256
204.29.230.0/24204.29.230.0 – 204.29.230.255256
204.29.231.0/24204.29.231.0 – 204.29.231.255256
205.0.0.0/8 · 15 prefixes · 4,096 addresses
PrefixRangeAddresses
205.198.112.0/21205.198.112.0 – 205.198.119.2552,048
205.198.112.0/24205.198.112.0 – 205.198.112.255256
205.198.114.0/24205.198.114.0 – 205.198.114.255256
205.198.116.0/24205.198.116.0 – 205.198.116.255256
205.198.117.0/24205.198.117.0 – 205.198.117.255256
205.198.119.0/24205.198.119.0 – 205.198.119.255256
205.198.120.0/22205.198.120.0 – 205.198.123.2551,024
205.198.120.0/24205.198.120.0 – 205.198.120.255256
205.198.121.0/24205.198.121.0 – 205.198.121.255256
205.198.122.0/24205.198.122.0 – 205.198.122.255256
205.198.124.0/23205.198.124.0 – 205.198.125.255512
205.198.125.0/24205.198.125.0 – 205.198.125.255256
205.198.126.0/23205.198.126.0 – 205.198.127.255512
205.198.126.0/24205.198.126.0 – 205.198.126.255256
205.198.127.0/24205.198.127.0 – 205.198.127.255256

BGP Neighbours

65 unique neighbours · 37 upstream/peer · 8 downstream · 20 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 (37)

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
AS140570HKBCS-AS-AP - Hong Kong Beecloud System Technology Services Limited2,2876,2682,681
AS7473SINGTEL-AS-AP - Singapore Telecommunications Ltd794730680
AS9002RETN-AS RETN Limited7256201,674
AS2914NTT-DATA-2914 - NTT America, Inc.6771,576928
AS138195MOACKCOLTD-AS-AP - MOACK.Co.LTD5087,9480
AS9286KINXIDC-AS-KR-KR - KINX478767357
AS6939HURRICANE - Hurricane Electric LLC3973,750534
AS45250VOCOM-AP-AS - Vocom International Telecommunications AP Area2643370
AS4766KIXS-AS-KR-KR - Korea Telecom2623370
AS1299TWELVE99 Arelion Sweden AB150168100
AS174COGENT-174 - Cogent Communications, LLC1461,252110
AS2497IIJ - Internet Initiative Japan Inc.145606146
AS3356LEVEL3 - Level 3 Parent, LLC1361,204105
AS9957KINX-AS-KR - KINX432043
AS8966Etisalat-AS EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC373740
AS35280F5 F5 Networks SARL1432116
AS38008APERTURE-AS-AP - Aperture Science Limited147420
AS4635HKIX-RS1 - Hong Kong Internet Exchange--Route Server 1101569
AS21859ZEN-ECN - Zenlayer Inc106413
AS24482SGGS-AS-AP - SG.GS872055
AS33891CORE-BACKBONE Core-Backbone GmbH6160
AS137409GSLNETWORKS-AS-AP - GSL Networks Pty LTD5490
AS8359MTS MTS PJSC4650
AS20326TERASWITCH - TeraSwitch Networks Inc.251
AS49127ASIMO-AS Asimo Networks B.V.240
AS63927RISE-HK - RISE270
AS132132REPUBLICTELECOM-SG - MyRepublic Ltd.250
AS4657STARHUB-INTERNET - StarHub Ltd120
AS9930TTNET-MY - TIME dotCom Berhad No. 14, Jalan Majistret U1/26 Hicom Glenmarie Industrial Park 40150 Shah Alam Selangor, Malaysia170
AS13194BITE UAB "Bite Lietuva"120
AS15802DU-AS1 Emirates Integrated Telecommunications Company PJSC120
AS17557PKTELECOM-AS-PK - Pakistan Telecommunication Company Limited120
AS24115ASN-EQIX-MLPE - Equinix102
AS39120CONVERGENZE-AS Convergenze S.p.A.1200
AS41095IPTP IPTP LTD1200
AS64049RJIPL-SG - Reliance Jio Infocomm Pte Ltd Singapore140
AS138997EDCL-AS-AP - Eons Data Communications Limited120

Downstream side (8)

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

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS15082OMEG-LCN - OMEGAI7703371,069
AS5068STACKSINC-GLOBAL - STACKS INC749657365
AS216138SKYQUANTUM-TELECOM SKYQUANTUM TELECOM LTD.5698,5670
AS153560STACKS-AS-AP - 202208375N4926750
AS152330ALLLAN-AS-AP - Alllan Communications Co., Limited3344950
AS401254NETSOLV-NETSOLV-01 - NETSOLVE NETWORK TECHNOLOGY LIMITED2643340
AS131482ARONNET - Hangzhou Aron Teconology Co.,Ltd.2593370
AS136758HONGKONG10-AS-AP - HONGKONG CENTURY-ONE LIMITED2591,1190

Collector-only (20)

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
AS49544i3Dnet i3D.net B.V711119
AS134823SDCL-AS-AP - Sky Digital Co., Ltd.7370
AS36236NETACTUATE - NetActuate, Inc36614
AS8529OMANTEL-AS Zain Omantel International FZ-LLC250
AS17639CONVERGE-AS - Converge ICT Solutions Inc.2113
AS38001NEWMEDIAEXPRESS-AS-AP - NewMedia Express Pte Ltd251
AS45489SLT-GLOBAL - Sri Lanka Telecom PLC, GLobal Peering2113
AS45896MOBIFONEGLOBAL-AS-VN - Mobifone Global JSC250
AS51185MAINSTREAMING-AS MainStreaming SpA251
AS58952FRONTIIRCOLTD-MM - Frontiir Co. Ltd250
AS133210ENTECHNOLOGIES-AS-AP - EN Technologies Pte Ltd251
AS199524GCORE G-Core Labs S.A.2333
AS1828UNITAS - Unitas Global1326
AS4777APNIC-COLO - Asia Pacific Network Information Centre165
AS14907WIKIMEDIA - Wikimedia Foundation Inc.131
AS25152K-ROOT-SERVER Reseaux IP Europeens Network Coordination Centre (RIPE NCC)162
AS25220GLOBALNOC-AS equada network GmbH122
AS35598INETCOM INETCOM CARRIER LLC120
AS59105HOMENOC - Home NOC Operators Group165
AS62167Tismi Tismi BV144

Raw RDAP Response

{
  "endAutnum": 398704,
  "entities": [
    {
      "entities": [
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2025-02-15T10:39:14-05:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2025-02-15T10:39:14-05:00"
            }
          ],
          "handle": "NOCNO72-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/NOCNO72-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/398704"
            },
            {
              "href": "https://whois.arin.net/rest/poc/NOCNO72-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/398704"
            }
          ],
          "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 2026-02-15"
              ],
              "title": "Unvalidated POC"
            }
          ],
          "roles": [
            "dns",
            "abuse",
            "noc",
            "routing",
            "technical"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "asdadfdasfdas dsafdasf\ndstar\n\n12345\nAmerican Samoa"
                },
                "text",
                [
                  "",
                  "",
                  "",
                  "",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "fn",
                {},
                "text",
                "noc noc"
              ],
              [
                "n",
                {},
                "text",
                [
                  "noc",
                  "noc",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "kind",
                {},
                "text",
                "individual"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+43423455"
              ]
            ]
          ]
        },
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2026-02-23T22:34:53-05:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2020-08-04T03:51:44-04:00"
            }
          ],
          "handle": "ZHANG335-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/ZHANG335-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/398704"
            },
            {
              "href": "https://whois.arin.net/rest/poc/ZHANG335-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/398704"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "remarks": [
            {
              "description": [
                "https://www.stacksinc.net"
              ],
              "title": "Registration Comments"
            }
          ],
          "roles": [
            "administrative"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "fn",
                {},
                "text",
                "REDACTED"
              ],
              [
                "kind",
                {},
                "text",
                "individual"
              ]
            ]
          ]
        },
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2026-02-23T21:19:09-05:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2025-02-17T02:33:08-05:00"
            }
          ],
          "handle": "CHONG52-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/CHONG52-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/398704"
            },
            {
              "href": "https://whois.arin.net/rest/poc/CHONG52-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/398704"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "roles": [
            "technical",
            "routing",
            "noc",
            "dns",
            "abuse"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "adfg3211\nDENVER\nCO\n80203\nUnited States"
                },
                "text",
                [
                  "",
                  "",
                  "",
                  "",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "fn",
                {},
                "text",
                "joey chong"
              ],
              [
                "n",
                {},
                "text",
                [
                  "chong",
                  "joey",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "kind",
                {},
                "text",
                "individual"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+1-626-890-5790"
              ]
            ]
          ]
        }
      ],
      "events": [
        {
          "eventAction": "last changed",
          "eventDate": "2026-02-23T22:38:01-05:00"
        },
        {
          "eventAction": "registration",
          "eventDate": "2020-08-05T11:01:36-04:00"
        }
      ],
      "handle": "STACK-10",
      "links": [
        {
          "href": "https://rdap.arin.net/registry/entity/STACK-10",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.arin.net/registry/autnum/398704"
        },
        {
          "href": "https://whois.arin.net/rest/org/STACK-10",
          "rel": "alternate",
          "type": "application/xml",
          "value": "https://rdap.arin.net/registry/autnum/398704"
        }
      ],
      "objectClassName": "entity",
      "port43": "whois.arin.net",
      "remarks": [
        {
          "description": [
            "GeoFeed https://www.stacksinc.net/geofeed.csv"
          ],
          "title": "Registration Comments"
        }
      ],
      "roles": [
        "registrant"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "STACKS INC"
          ],
          [
            "adr",
            {
              "label": "1665 LOGAN ST\nDENVER\nCO\n80203\nUnited States"
            },
            "text",
            [
              "",
              "",
              "",
              "",
              "",
              "",
              ""
            ]
          ],
          [
            "kind",
            {},
            "text",
            "org"
          ]
        ]
      ]
    }
  ],
  "events": [
    {
      "eventAction": "last changed",
      "eventDate": "2024-09-27T05:36:39-04:00"
    },
    {
      "eventAction": "registration",
      "eventDate": "2020-08-13T07:00:56-04:00"
    }
  ],
  "handle": "AS398704",
  "links": [
    {
      "href": "https://rdap.arin.net/registry/autnum/398704",
      "rel": "self",
      "type": "application/rdap+json",
      "value": "https://rdap.arin.net/registry/autnum/398704"
    },
    {
      "href": "https://whois.arin.net/rest/asn/AS398704",
      "rel": "alternate",
      "type": "application/xml",
      "value": "https://rdap.arin.net/registry/autnum/398704"
    }
  ],
  "name": "STACKSINC-BACKBONE",
  "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/398704"
        }
      ],
      "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/398704"
        }
      ],
      "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"
  ],
  "remarks": [
    {
      "description": [
        "https://www.stacksinc.net",
        "Standard NOC hours 24H",
        "GeoFeed https://www.stacksinc.net/geofeed.csv"
      ],
      "title": "Registration Comments"
    }
  ],
  "startAutnum": 398704,
  "status": [
    "active"
  ]
}

Contact details of private individuals are redacted.