ASN AS4185 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS4185?

AS4185 is listed under AT&T Enterprises, LLC.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS4185 AT&T Enterprises, LLC | IPGeolocation.io

ASN Lookup Tool

AT&T Enterprises, LLC semail.att.com

US 17 Routes

AS Data

AS4185

AS4185 – AT&T Enterprises, LLC

AS Number	4185
AS Name	ATTIS-ASN4185
Organization	AT&T Enterprises, LLC (ael-360)
Country	US
Website	semail.att.com
Number of IPv4 Routes	13
Number of IPv6 Routes	4
ASN type	ISP
Registry	ARIN
Date Allocated	1994-12-16

ASN Intelligence API for production workflows

Use ASN data for AS4185 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
12.150.176.0/24	AS4185	AT&T Enterprises, LLC	TCORP FAX INTERNAL AVPN ATT	256
152.75.0.0/16	AS4185	AT&T Enterprises, LLC	USAGM	65536
12.14.14.0/24	AS4185	AT&T Enterprises, LLC	AT&T Enterprises, LLC	256
2620:0:610::/48	AS4185	AT&T Enterprises, LLC	Federal Communications Commission	~1×10²⁴
192.133.125.0/24	AS4185	AT&T Enterprises, LLC	Federal Communications Commission	256
192.104.54.0/24	AS4185	AT&T Enterprises, LLC	Federal Communications Commission	256
12.14.12.0/24	AS4185	AT&T Enterprises, LLC	AT&T Enterprises, LLC	256
2620:0:900::/48	AS4185	AT&T Enterprises, LLC	American Registry for Internet Numbers	~1×10²⁴
2602:80a:e000::/44	AS4185	AT&T Enterprises, LLC	Millennium Challenge Corporation	~19×10²⁴
12.183.71.0/24	AS4185	AT&T Enterprises, LLC	AT&T Enterprises, LLC	256
12.185.4.0/24	AS4185	AT&T Enterprises, LLC	TCORP FAX INTERNAL AVPN ATT	256
2620:0:6e0::/48	AS4185	AT&T Enterprises, LLC	Small Business Administration	~1×10²⁴
12.185.7.0/24	AS4185	AT&T Enterprises, LLC	TCORP FAX INTERNAL AVPN ATT	256
148.184.0.0/16	AS4185	AT&T Enterprises, LLC	United States Nuclear Regulatory Commission	65536
152.75.221.0/24	AS4185	AT&T Enterprises, LLC	USAGM	256
165.110.0.0/16	AS4185	AT&T Enterprises, LLC	U.S. Small Business Administration	65536
12.150.186.0/24	AS4185	AT&T Enterprises, LLC	AT&T Enterprises, LLC	256

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.
#


ASNumber:       4185
ASName:         ATTIS-ASN4185
ASHandle:       AS4185
RegDate:        1994-12-16
Updated:        2024-12-05
Ref:            https://rdap.arin.net/registry/autnum/4185



OrgName:        AT&T Enterprises, LLC
OrgId:          AEL-360
Address:        208 S. Akard St.
City:           Dallas
StateProv:      TX
PostalCode:     75202
Country:        US
RegDate:        2024-11-22
Updated:        2026-06-05
Ref:            https://rdap.arin.net/registry/entity/AEL-360


OrgAbuseHandle: ABUSE7-ARIN
OrgAbuseName:   abuse
OrgAbusePhone:  +1-919-319-8167 
OrgAbuseEmail:  abuse@att.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE7-ARIN

OrgTechHandle: ICC-ARIN
OrgTechName:   IP Team
OrgTechPhone:  +1-888-876-2382 
OrgTechEmail:  rm-ipspecialist@att.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ICC-ARIN

OrgRoutingHandle: ROUTI59-ARIN
OrgRoutingName:   Routing POC
OrgRoutingPhone:  +1-999-999-9999 
OrgRoutingEmail:  routing_poc@att.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ROUTI59-ARIN

OrgTechHandle: ZS44-ARIN
OrgTechName:   IPAdmin-ATT Internet Services
OrgTechPhone:  +1-888-510-5545 
OrgTechEmail:  ipadmin@semail.att.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ZS44-ARIN


#
# 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.
#

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "4185",
    "as_handle" : "AS4185",
    "as_name" : "ATTIS-ASN4185",
    "tech_contacts" : [ "ICC-ARIN", "ROUTI59-ARIN", "ZS44-ARIN" ],
    "abuse_contacts" : [ "ABUSE7-ARIN" ],
    "date_created" : "1994-12-16",
    "date_updated" : "2024-12-05",
    "source" : "https://rdap.arin.net/registry/autnum/4185"
  } ],
  "organization" : {
    "handle" : "AEL-360",
    "name" : "AT&T Enterprises, LLC",
    "address" : [ "208 S. Akard St.", "Dallas", "TX", "75202", "US" ],
    "street" : "S. Akard St.",
    "city" : "Dallas",
    "state" : "TX",
    "zip_code" : "75202",
    "country" : [ "US" ],
    "date_created" : "2024-11-22",
    "date_updated" : "2026-06-05",
    "source" : "https://rdap.arin.net/registry/entity/AEL-360",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "ICC-ARIN",
    "name" : "IP Team",
    "email" : [ "rm-ipspecialist@att.com" ],
    "phone" : [ "+1-888-876-2382" ],
    "source" : "https://rdap.arin.net/registry/entity/ICC-ARIN"
  }, {
    "handle" : "ROUTI59-ARIN",
    "name" : "Routing POC",
    "email" : [ "routing_poc@att.com" ],
    "phone" : [ "+1-999-999-9999" ],
    "source" : "https://rdap.arin.net/registry/entity/ROUTI59-ARIN"
  }, {
    "handle" : "ZS44-ARIN",
    "name" : "IPAdmin-ATT Internet Services",
    "email" : [ "ipadmin@semail.att.com" ],
    "phone" : [ "+1-888-510-5545" ],
    "source" : "https://rdap.arin.net/registry/entity/ZS44-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "ABUSE7-ARIN",
    "name" : "abuse",
    "email" : [ "abuse@att.net" ],
    "phone" : [ "+1-919-319-8167" ],
    "source" : "https://rdap.arin.net/registry/entity/ABUSE7-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US
AS13979	AT&T Enterprises, LLC	US

Upstreams

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US

Downstreams

AS Number	Description	Country
AS13979	AT&T Enterprises, LLC	US

Contacts

Email Contacts

routing_poc@att.com ipadmin@semail.att.com rm-ipspecialist@att.com

Abuse Contacts

abuse@att.net

Legacy Routes

2620:10f:b070::/48 2620:10f:b000::/48