155.172.0.18
ISP
Data retrieved at
Network
ASN
Not available.
IP Range
Company
Not available.
Registrant
AT&T Enterprises, LLC
ATT-MOBILITY-LLC-155-172-0-0
Using networksdb.io for network lookups.
Hostname
mobile-155-172-000-018.mycingular.net
AS Domain
Not available.
Type
ISP
Handle
NET-155-172-0-0-1
Registered
1992-03-24
Last Changed
2025-03-18
View raw RDAP
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "155.172.0.0",
"length": 16
}
],
"endAddress": "155.172.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-02-04T11:52:45-05:00"
},
{
"eventAction": "registration",
"eventDate": "2000-05-17T16:09:19-04:00"
}
],
"handle": "ZS44-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ZS44-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/155.172.0.18"
},
{
"href": "https://whois.arin.net/rest/poc/ZS44-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/155.172.0.18"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"For policy abuse issues contact:",
"Email [email protected]. NO ATTACHMENTS. Include IP address, time/date, message header, and attack logs.",
"",
"For all Legal Inquiries contact:",
"AT&T National Compliance Center",
"11760 US Hwy 1, Suite 300",
"North Palm Beach, FL 33408",
"Phone:\t1-800-635-6840, opt 5",
"Fax:\t1-888-938-4715",
"Email:\[email protected]"
],
"title": "Registration Comments"
}
],
"roles": [
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "208 S. Akard St.\nDallas\nTX\n75202\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"IPAdmin-ATT Internet Services"
],
[
"org",
{},
"text",
"AT&T Enterprises, LLC"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-888-510-5545"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-03-17T09:10:06-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-05-23T17:15:05-04:00"
}
],
"handle": "ROUTI59-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ROUTI59-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/155.172.0.18"
},
{
"href": "https://whois.arin.net/rest/poc/ROUTI59-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/155.172.0.18"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "200 S Laurel Ave\nMiddletown\nNJ\n07748\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Routing POC"
],
[
"org",
{},
"text",
"AT&T"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-999-999-9999"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-19T20:36:24-04:00"
},
{
"eventAction": "registration",
"eventDate": "2002-09-24T15:36:27-04:00"
}
],
"handle": "ICC-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ICC-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/155.172.0.18"
},
{
"href": "https://whois.arin.net/rest/poc/ICC-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/155.172.0.18"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Contact AT&T Abuse ([email protected]) for policy",
"issues.",
"All policy abuse issues sent to other POCs will be",
"disregarded."
],
"title": "Registration Comments"
}
],
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "200 S. Laurel AVE\nMIDDLETOWN\nNJ\n07748\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"IP Team"
],
[
"org",
{},
"text",
"AT&T WorldNet Services"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-888-876-2382"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-08-18T17:15:38-04:00"
},
{
"eventAction": "registration",
"eventDate": "2002-08-24T08:22:47-04:00"
}
],
"handle": "ABUSE7-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABUSE7-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/155.172.0.18"
},
{
"href": "https://whois.arin.net/rest/poc/ABUSE7-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/155.172.0.18"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Contact [email protected] for all policy abuse issues."
],
"title": "Registration Comments"
}
],
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "2701 W 15th ST\nPlano\nTX\n75075\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"abuse"
],
[
"org",
{},
"text",
"Ameritech"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-919-319-8167"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-05T11:57:30-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-11-22T09:44:51-05:00"
}
],
"handle": "AEL-360",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/AEL-360",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/155.172.0.18"
},
{
"href": "https://whois.arin.net/rest/org/AEL-360",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/155.172.0.18"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"AT&T Enterprises, LLC"
],
[
"adr",
{
"label": "208 S. Akard St.\nDallas\nTX\n75202\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-03-18T15:11:54-04:00"
},
{
"eventAction": "registration",
"eventDate": "1992-03-24T00:00:00-05:00"
}
],
"handle": "NET-155-172-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/155.172.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/155.172.0.18"
},
{
"href": "https://whois.arin.net/rest/net/NET-155-172-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/155.172.0.18"
}
],
"name": "ATT-MOBILITY-LLC-155-172-0-0",
"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/155.172.0.18"
}
],
"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/155.172.0.18"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-155-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "155.172.0.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}
Security
No security threats detected for this IP.
VPN
Proxy
Tor
Hosting
Residential Proxy
Bogon
Abuser
Crawler
RPKI
RPKI Origin Validation
RPKI verifies that an IP prefix is legitimately announced by the authorized Autonomous System (ASN) using Route Origin Authorizations (ROAs).
Unknown.
No valid ROA was found for this prefix.
UNKNOWN
Validated Prefix
Not available
Authorized ASN
Not available.
IP Geolocation
Country
United States
Time Zone
America/Chicago
Coordinates
37.751, -97.822
Continent
North America
European Union
No.
Phone prefix
+1
Currency
US Dollar (USD $)