Free network tools
AS WHOIS
Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
Network Report (All-in-one) BGP Looking Glass BGP Security Check RPKI Validator BGP Hijack & Leak Monitor ASN Intelligence Internet Outages & Anomalies Country Internet Report Domain Insights IP WHOIS AS WHOIS
AS6079
RCN-AS - RCN Announcing routesAS nameRCN-AS
OrganisationRCN
Registry (RIR)ARIN
HandleAS6079
RangeAS6079
Registered04 Apr 2001
Last changed02 Oct 2013
Abuse contact[email protected]
2860IPv4 prefixes
134IPv6 prefixes
32Upstreams
94Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS1299 | TWELVE99 Arelion Sweden AB | 6177 |
| AS3356 | LEVEL3 - Level 3 Parent, LLC | 4289 |
| AS6939 | HURRICANE - Hurricane Electric LLC | 3609 |
| AS3257 | GTT-BACKBONE GTT Communications Inc. | 3065 |
| AS9002 | RETN-AS RETN Limited | 1207 |
| AS25091 | IP-Max IP-Max SA | 559 |
| AS13030 | INIT7 Init7 (Switzerland) Ltd. | 452 |
| AS33891 | CORE-BACKBONE Core-Backbone GmbH | 326 |
| AS60068 | CDN77 Datacamp Limited | 239 |
| AS3303 | SWISSCOM Swisscom (Schweiz) AG | 210 |
| AS4637 | ASN-TELSTRA-GLOBAL - Telstra Global | 147 |
| AS41327 | FIBERTELECOM-AS Fiber Telecom S.p.A. | 142 |
| AS2497 | IIJ - Internet Initiative Japan Inc. | 138 |
| AS52320 | AS52320 - GlobeNet Cabos Submarinos Colombia, S.A.S. | 127 |
| AS577 | BACOM - Bell Canada | 104 |
Downstreams
| AS | Network name | Visibility |
|---|---|---|
| AS398427 | MARKLEY-NETWORK-SERVICES - Markley Network Services, LLC | 1640 |
| AS11878 | TZULO - tzulo, inc. | 1435 |
| AS971 | PUREVOLTAGE - PureVoltage Hosting Inc. | 634 |
| AS396269 | BPL-ASN - Buckeye Partners L.P. | 520 |
| AS17190 | ASN17190 - Washington Metropolitan Area Transit Authority | 474 |
| AS398465 | RACKDOG-LLC - Rackdog, LLC | 470 |
| AS41264 | GOOGLE-IT-RO-ISP Google Switzerland GmbH | 449 |
| AS4901 | CAAREN - The George Washington University | 410 |
| AS11318 | GU - Georgetown University | 395 |
| AS16478 | COLONIALNET-IU20 - Colonial IU 20 | 368 |
| AS14713 | HBL-35-14713 - Hosted Backbone | 355 |
| AS19656 | LOCAL-SECURE-DATA - Lehigh Secure Data LLC | 347 |
| AS46587 | 2991400 - Cerberus Capital Management LP | 313 |
| AS4133 | BITWISE - Bitwise Internet Technologies, Inc. | 277 |
| AS11939 | MATHWORKS - THE MATHWORKS, INC. | 273 |
IPv4 prefixes (2860)
84.75.254.0/2445.197.241.0/24188.221.128.0/2466.253.106.0/24209.137.179.0/2474.49.14.0/2486.226.200.0/22209.130.64.0/20112.73.45.0/24178.83.233.0/24204.242.128.0/20198.171.144.0/20207.20.208.0/2074.1.144.0/2074.1.131.0/2489.124.2.0/23165.20.30.0/24206.50.64.0/20188.220.162.0/2479.176.41.0/2463.247.83.0/2465.86.165.0/24136.162.48.0/20199.103.208.0/2016.220.136.0/2282.40.160.0/20165.20.234.0/24192.120.199.0/24206.239.96.0/20199.103.224.0/2075.153.225.0/24168.235.149.0/24130.180.224.0/19199.160.48.0/2069.77.22.0/23154.221.249.0/24148.59.15.0/249.142.231.0/24165.20.10.0/2464.22.89.0/2464.249.224.0/2064.204.63.0/24207.180.128.0/2482.39.143.0/2492.112.111.0/2474.1.109.0/2474.49.46.0/2450.114.110.0/2474.1.160.0/21213.218.237.0/24178.83.35.0/24141.140.75.0/24142.173.48.0/21139.171.50.0/2395.134.1.0/2445.197.250.0/2448.45.138.0/24154.207.17.0/24199.237.0.0/20165.20.14.0/2482.39.151.0/24208.99.37.0/2465.86.163.0/24185.253.122.0/24137.155.48.0/21168.75.226.0/2350.114.109.0/2494.154.177.0/24137.155.96.0/2182.40.144.0/2051.146.224.0/2265.86.164.0/24107.149.168.0/22207.20.224.0/20165.49.204.0/24154.221.248.0/2492.112.116.0/24178.95.241.0/24136.162.64.0/20207.251.19.0/2423.184.240.0/24206.50.96.0/20149.75.0.0/16104.171.168.0/24107.158.18.0/2396.62.248.0/2445.197.242.0/24165.20.98.0/24192.25.200.0/2324.148.0.0/18154.83.51.0/2465.86.240.0/20142.173.64.0/21199.15.208.0/2265.86.169.0/24198.170.96.0/20166.1.162.0/2374.49.21.0/2463.160.204.0/2295.134.229.0/24165.20.62.0/2475.153.200.0/24165.20.39.0/24165.20.206.0/24163.5.250.0/2464.204.222.0/24165.20.194.0/2445.197.243.0/24165.49.200.0/24165.20.207.0/24209.236.241.0/24194.122.86.0/24142.173.0.0/21104.171.167.0/2448.45.158.0/24139.171.48.0/23104.234.85.0/245.151.192.0/24165.20.227.0/24165.20.250.0/24165.20.199.0/2445.197.219.0/2485.232.188.0/24165.20.205.0/2445.197.247.0/24165.20.193.0/24173.0.127.0/2464.112.56.0/22165.20.172.0/24151.244.34.0/2464.8.242.0/24198.11.44.0/2264.204.116.0/24207.251.30.0/24205.188.200.0/22205.188.180.0/23154.207.10.0/2484.75.8.0/24156.233.64.0/2416.221.163.0/2464.248.192.0/2023.26.89.0/2468.166.229.0/24204.0.192.0/2074.1.99.0/24188.221.239.0/2486.226.224.0/22108.171.53.0/24102.216.80.0/2448.45.142.0/2448.45.151.0/24137.155.64.0/19173.0.120.0/2451.19.216.0/21154.221.254.0/24154.207.13.0/24198.171.96.0/2074.49.88.0/2451.241.96.0/24142.173.120.0/21165.20.185.0/24165.20.220.0/2482.22.128.0/2187.84.201.0/2482.38.218.0/2482.39.134.0/249.249.74.0/23208.5.144.0/2051.241.234.0/2464.204.121.0/24209.94.95.0/24178.93.246.0/249.142.178.0/249.151.128.0/18206.225.134.0/2345.197.220.0/2474.82.104.0/22198.170.112.0/20165.20.107.0/2466.227.96.0/2274.49.103.0/2423.26.168.0/2223.145.76.0/24165.20.86.0/2468.164.139.0/24194.179.168.0/22207.251.21.0/2468.166.225.0/24165.20.149.0/2466.95.48.0/2094.195.96.0/2123.230.167.0/24158.94.80.0/21139.171.128.0/1945.197.223.0/2466.92.104.0/22207.43.48.0/2094.195.160.0/2169.33.128.0/2269.54.228.0/229.142.94.0/2423.230.184.0/2381.22.131.0/24206.239.80.0/20166.1.191.0/2462.68.93.0/2475.153.249.0/2464.8.246.0/24216.65.128.0/20207.251.25.0/2448.45.239.0/24112.73.51.0/24154.221.253.0/2478.105.241.0/24158.120.49.0/2474.49.93.0/24138.238.3.0/2431.98.144.0/20154.207.7.0/2482.46.224.0/2087.85.96.0/24154.15.192.0/20192.120.127.0/2491.124.190.0/23165.20.158.0/24165.20.181.0/249.142.88.0/229.142.91.0/24199.236.0.0/20204.242.192.0/20155.103.254.0/2474.1.123.0/2464.204.40.0/24166.88.153.0/2451.19.0.0/21165.20.211.0/24165.20.176.0/24158.120.63.0/2474.49.97.0/2487.76.187.0/24207.20.192.0/20188.220.211.0/2478.105.245.0/2482.46.0.0/2046.70.76.0/2282.22.152.0/22173.232.105.0/24209.250.64.0/1950.118.199.0/2494.195.128.0/21149.143.128.0/23154.207.23.0/2468.166.228.0/24149.57.246.0/24104.165.25.0/24154.81.205.0/24154.221.250.0/24154.221.227.0/24194.77.93.0/2464.8.241.0/24151.247.233.0/24206.184.208.0/2095.135.140.0/24154.81.207.0/24207.251.23.0/24206.239.208.0/2074.49.3.0/24166.88.215.0/24178.92.186.0/24112.73.27.0/2445.38.168.0/24154.15.16.0/20142.173.88.0/21198.171.192.0/2078.105.240.0/2482.21.104.0/22165.20.85.0/2448.45.248.0/2474.1.97.0/24204.242.241.0/24165.20.135.0/24194.77.196.0/2474.49.69.0/24154.207.9.0/24165.20.79.0/2464.249.48.0/20178.93.248.0/24204.0.128.0/20173.0.122.0/24216.74.67.0/24178.239.121.0/2448.44.144.0/21170.124.64.0/1948.45.140.0/24139.171.160.0/1974.1.29.0/24149.143.132.0/23165.20.187.0/2469.77.0.0/2074.49.86.0/24
IPv6 prefixes (134)
2a0f:7d00:100::/482a0e:f600:2a::/482602:fad4:1c::/482a0f:da40::/292a13:cc0::/292a0f:3e80::/292a0f:88c1::/322601:2068::/292a12:ecc0:11::/482610:81:3000::/362a10:67c2:d6::/482a13:9285:100::/482a12:ecc0:3e2::/482601:2050::/292602:fad4:22::/482a0f:bc04:1004::/482a12:2c80::/292a0a:1f40::/292601:20a0::/292a0c:9e05::/322a12:dc00::/292a0e:eb46::/322a0f:3047:fe48::/482602:fad4:29::/482a13:2c40::/292a0a:2d06:66::/482a0e:e980::/292a0f:1206:66::/482a0e:c787:1000::/482a0f:e7c7:b4::/482a0f:ec00::/292a10:7300::/292a0f:9b00::/292a0e:eb45::/322a0f:ea44:55::/482a0e:c786:122::/482a01:e300::/292a0a:8600::/292a13:18c5:11::/482a13:18c6:101::/482a11:1200::/292a0f:1fc0::/292a0e:eb42::/322a0f:18c0::/292602:fad4:1e::/482a07:f300::/292601:2008::/292a13:cdc0::/292a0e:1a83:99::/482a0c:fa40::/292a13:3080::/292610:84:2000::/362a0f:3d80:1312::/482a0f:e1c0:1312::/482a10:67c5:2::/482a0f:e1c7:77::/482601:2038::/292a13:8100::/292602:ff62:9::/482602:fad4:19::/482a13:18c6:8512::/482601:2090::/292602:fad4:25::/482a0f:1e80:1986::/482a0f:3046:85::/482a13:e100:323::/482602:fad4:15::/482a13:9180::/292602:fad4:20::/482a0f:1380::/292a14:72c0::/292602:fad4:21::/482610:86:3000::/362a12:ac46:77::/482610:85:2000::/362a13:c900:120::/482a0f:36c0::/292602:fad4:27::/482610:81:2000::/362602:fad4:1a::/482602:fad4:17::/482a06:1184:11::/482a0e:eb41::/322602:fad4:1b::/482a11:1140::/292a10:6f00::/292a0e:15c7:101::/482a11:6d40::/292a06:b3c0::/292601:2000::/292602:fad4:18::/482a10:7500::/292a0f:e207:fd38::/482a10:6500::/292602:fad4:24::/482602:fad4:1f::/482602:fad4:26::/482602:fad4:23::/482a13:e102:1::/482a13:1940::/292a10:4e00::/292a09:17c1:4a::/482a13:8c86:10a::/482a0d:4b40::/292602:fad4:1d::/482602:fad4:28::/482a0d:1140::/292a03:a960::/292a0f:e740::/292610:80:2000::/362a0f:1584:6::/482a0c:7882:2::/482a0e:eb47::/322a12:ac46:99::/482610:80::/292a14:5840::/292a13:8c86:88::/482a05:b300::/292610:86:2000::/362a0b:8440::/292a06:35c3:100::/482a10:7700::/292a0f:de40::/292602:fad4:16::/482a0f:e202:33::/482607:52c0:4000::/342a0e:eb43::/322a0a:7e00::/292a10:5400::/292a10:7d00::/292a0f:88c2::/322610:82:2000::/362610:82:3000::/362610:84:3000::/36
RPKI-validate all prefixes of AS6079
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | RCN | RTSL-6 | 650 College Road East, Princeton, NJ, 08540, United States | |
| administrative | Peter Jacoby | PJ301-ARIN | [email protected], +1-781-316-8815 | 956 Massachusetts Ave., Arlington, MA, 02476, United States |
| abuse | RCN Abuse Department | RAD75-ARIN | [email protected], +1-888-972-6622 | 650 College Rd. East, Princeton, NJ, 08540, United States |
| technical | RCN Corporation | ZR40-ARIN | [email protected], +1-888-972-6622 | 650 College Rd. East, Princeton, NJ, 08540, United States |
| noc | Astound Broadband NOC | ABN3-ARIN | [email protected], +1-888-972-6622 | 600 College Rd. East, Princeton, NJ, 08540, United States |
Raw registry response
{
"endAutnum": 6079,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-12-01T10:04:53-05:00"
},
{
"eventAction": "registration",
"eventDate": "2002-08-08T18:43:24-04:00"
}
],
"handle": "PJ301-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/PJ301-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6079"
},
{
"href": "https://whois.arin.net/rest/poc/PJ301-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6079"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"For assistance call the Astound NOC - 888-972-6622"
],
"title": "Registration Comments"
}
],
"roles": [
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "956 Massachusetts Ave.\nArlington\nMA\n02476\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Peter Jacoby"
],
[
"n",
[],
"text",
[
"Jacoby",
"Peter",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-781-316-8815"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-26T07:22:53-04:00"
},
{
"eventAction": "registration",
"eventDate": "2002-12-09T14:45:24-05:00"
}
],
"handle": "RAD75-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/RAD75-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6079"
},
{
"href": "https://whois.arin.net/rest/poc/RAD75-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6079"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Please direct all communications regarding abuse to\r",
"[email protected]"
],
"title": "Registration Comments"
}
],
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "650 College Rd. East\nPrinceton\nNJ\n08540\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"RCN Abuse Department"
],
[
"org",
[],
"text",
"Astound Broadband Abuse Team"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-888-972-6622"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-26T07:22:45-04:00"
},
{
"eventAction": "registration",
"eventDate": "2001-04-04T16:06:32-04:00"
}
],
"handle": "ZR40-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ZR40-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6079"
},
{
"href": "https://whois.arin.net/rest/poc/ZR40-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6079"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"For all abuse issues, please contact [email protected]"
],
"title": "Registration Comments"
}
],
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "650 College Rd. East\nPrinceton\nNJ\n08540\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"RCN Corporation"
],
[
"org",
[],
"text",
"Astound Broadband"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-888-972-6622"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-28T08:25:20-04:00"
},
{
"eventAction": "registration",
"eventDate": "2022-08-30T09:05:35-04:00"
}
],
"handle": "ABN3-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABN3-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6079"
},
{
"href": "https://whois.arin.net/rest/poc/ABN3-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6079"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "600 College Rd. East\nPrinceton\nNJ\n08540\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Astound Broadband NOC"
],
[
"org",
[],
"text",
"Astound Broadband"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-888-972-6622"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2022-08-30T10:31:18-04:00"
},
{
"eventAction": "registration",
"eventDate": "2013-07-09T13:37:15-04:00"
}
],
"handle": "RTSL-6",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/RTSL-6",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6079"
},
{
"href": "https://whois.arin.net/rest/org/RTSL-6",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6079"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"For all abuse issues, please contact [email protected]"
],
"title": "Registration Comments"
}
],
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"RCN"
],
[
"adr",
{
"label": "650 College Road East\nPrinceton\nNJ\n08540\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2013-10-02T10:59:22-04:00"
},
{
"eventAction": "registration",
"eventDate": "2001-04-04T00:00:00-04:00"
}
],
"handle": "AS6079",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/6079",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6079"
},
{
"href": "https://whois.arin.net/rest/asn/AS6079",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6079"
}
],
"name": "RCN-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/6079"
}
],
"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/6079"
}
],
"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": 6079,
"status": [
"active"
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.