Whois & RDAP Lookup
V.PS Cloud KVM VPS for developers KVM VPS · 11 PoPs · 99.9% SLA Simple VPS, premium network · Pick a PoP, deploy in seconds 11 PoPs · APAC, Europe, North America Tier 1 upstreams Premium network · Low-latency routes Free 24×7 support €6.95/mo Deploy a serverDeploy204.77.128.180
IP Geolocation RDAPIP Range204.77.128.0 - 204.77.129.255
HandleNET-204-77-128-0-2
NameRCN-01
TypeALLOCATION
HolderRCN
Registered2025-10-30 02:10 UTC
Updated2026-05-18 13:09 UTC
RegistrantRCN
Address650 College Road East, Princeton, NJ, 08540, United States
Admin ContactPeter Jacoby
Email[email protected]
Phone+1-781-316-8815
Address956 Massachusetts Ave., Arlington, MA, 02476, United States
Tech ContactRCN Corporation
OrganizationAstound Broadband
Email[email protected]
Phone+1-888-972-6622
Address650 College Rd. East, Princeton, NJ, 08540, United States
Abuse Contact[email protected]
Abuse Phone+1-888-972-6622
Statusactive
Registry RDAPhttps://rdap.arin.net
Raw WHOIS response
# # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # # start NetRange: 204.77.128.0 - 204.77.131.255 CIDR: 204.77.128.0/22 NetName: JIULING-01 NetHandle: NET-204-77-128-0-1 Parent: NET204 (NET-204-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: JIULING (JNTL) RegDate: 2025-08-04 Updated: 2025-08-04 Ref: https://rdap.arin.net/registry/ip/204.77.128.0 OrgName: JIULING OrgId: JNTL Address: 1800 Glenarm P, Unit 99 City: Denver StateProv: CO PostalCode: 80202 Country: US RegDate: 2023-03-03 Updated: 2023-03-21 Ref: https://rdap.arin.net/registry/entity/JNTL OrgDNSHandle: SUNXU4-ARIN OrgDNSName: Sun, Xuebo OrgDNSPhone: +1-720-996-2090 OrgDNSEmail: [email protected] OrgDNSRef: https://rdap.arin.net/registry/entity/SUNXU4-ARIN OrgNOCHandle: SUNXU4-ARIN OrgNOCName: Sun, Xuebo OrgNOCPhone: +1-720-996-2090 OrgNOCEmail: [email protected] OrgNOCRef: https://rdap.arin.net/registry/entity/SUNXU4-ARIN OrgAbuseHandle: SUNXU4-ARIN OrgAbuseName: Sun, Xuebo OrgAbusePhone: +1-720-996-2090 OrgAbuseEmail: [email protected] OrgAbuseRef: https://rdap.arin.net/registry/entity/SUNXU4-ARIN OrgRoutingHandle: SUNXU4-ARIN OrgRoutingName: Sun, Xuebo OrgRoutingPhone: +1-720-996-2090 OrgRoutingEmail: [email protected] OrgRoutingRef: https://rdap.arin.net/registry/entity/SUNXU4-ARIN OrgTechHandle: SUNXU4-ARIN OrgTechName: Sun, Xuebo OrgTechPhone: +1-720-996-2090 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/SUNXU4-ARIN # end # start NetRange: 204.77.128.0 - 204.77.129.255 CIDR: 204.77.128.0/23 NetName: RCN-01 NetHandle: NET-204-77-128-0-2 Parent: JIULING-01 (NET-204-77-128-0-1) NetType: Reallocated OriginAS: Organization: RCN (RTSL-6) RegDate: 2025-10-29 Updated: 2026-05-18 Ref: https://rdap.arin.net/registry/ip/204.77.128.0 OrgName: RCN OrgId: RTSL-6 Address: 650 College Road East City: Princeton StateProv: NJ PostalCode: 08540 Country: US RegDate: 2013-07-09 Updated: 2022-08-30 Comment: For all abuse issues, please contact [email protected] Ref: https://rdap.arin.net/registry/entity/RTSL-6 ReferralServer: rwhois://rwhois.rcn.net:4321 OrgNOCHandle: ABN3-ARIN OrgNOCName: Astound Broadband NOC OrgNOCPhone: +1-888-972-6622 OrgNOCEmail: [email protected] OrgNOCRef: https://rdap.arin.net/registry/entity/ABN3-ARIN OrgTechHandle: ZR40-ARIN OrgTechName: RCN Corporation OrgTechPhone: +1-888-972-6622 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/ZR40-ARIN OrgAbuseHandle: RAD75-ARIN OrgAbuseName: RCN Abuse Department OrgAbusePhone: +1-888-972-6622 OrgAbuseEmail: [email protected] OrgAbuseRef: https://rdap.arin.net/registry/entity/RAD75-ARIN # end # # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # %rwhois V-1.5:003fff:00 rwhois.rcn.net (by Network Solutions, Inc. V-1.5.9.6) %referral rwhois://root.rwhois.net:4321/auth-area=. %ok % Query time: 2143 msec % WHEN: Sat Sep 19 04:52:48 UTC 2026
Raw RDAP JSON (registry) https://rdap.arin.net
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"length": 23,
"v4prefix": "204.77.128.0"
}
],
"endAddress": "204.77.129.255",
"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/ip/204.77.128.180"
},
{
"href": "https://whois.arin.net/rest/poc/PJ301-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/204.77.128.180"
}
],
"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": "2025-09-26T08:21:23-04:00"
},
{
"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/ip/204.77.128.180"
},
{
"href": "https://whois.arin.net/rest/poc/RAD75-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/204.77.128.180"
}
],
"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": "2025-09-26T08:21:01-04:00"
},
{
"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/ip/204.77.128.180"
},
{
"href": "https://whois.arin.net/rest/poc/ZR40-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/204.77.128.180"
}
],
"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/ip/204.77.128.180"
},
{
"href": "https://whois.arin.net/rest/poc/ABN3-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/204.77.128.180"
}
],
"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/ip/204.77.128.180"
},
{
"href": "https://whois.arin.net/rest/org/RTSL-6",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/204.77.128.180"
}
],
"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": "2026-05-18T09:09:11-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-10-29T22:10:03-04:00"
}
],
"handle": "NET-204-77-128-0-2",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/204.77.128.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/204.77.128.180"
},
{
"href": "https://whois.arin.net/rest/net/NET-204-77-128-0-2",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/204.77.128.180"
},
{
"href": "https://rdap.arin.net/registry/ip/204.77.128.0/22",
"rel": "up",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/204.77.128.180"
}
],
"name": "RCN-01",
"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/ip/204.77.128.180"
}
],
"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/ip/204.77.128.180"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-204-77-128-0-1",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "204.77.128.0",
"status": [
"active"
],
"type": "ALLOCATION"
}Frequently asked questions
What is WHOIS?
WHOIS is a public directory that answers "who is responsible for this?" for domains, IP ranges and ASNs. It lists registration dates, the registrar, nameservers and contacts.
What is RDAP, and how does it differ?
RDAP is the modern replacement for WHOIS. It returns the same records in a structured, consistent format. We query RDAP first and fall back to classic WHOIS text when a registry has not adopted it yet.
What is the difference between a registrar and a registrant?
The registrar is the company you register and manage a domain through, such as xTom or GoDaddy. The registrant is the person or organization that actually holds the domain.
What are nameservers?
Nameservers answer DNS questions for a domain and decide which IP addresses the name resolves to. They also show which DNS provider the domain uses.
What is DNSSEC?
DNSSEC adds cryptographic signatures to DNS answers so they cannot be quietly altered in transit. "Signed" means the domain has it enabled, "unsigned" means it does not.
Why is the contact information redacted?
Privacy laws such as GDPR require registrars to hide most personal details in public records. The abuse contact is usually still shown, so a domain or network can be reported when something goes wrong.