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AS12142 SULLCROM | IPGeolocation.io

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

SULLCROM sullcrom.com

US 3 Routes

AS Data

AS12142

AS12142 – SULLCROM

AS Number	12142
AS Name	SULLIVAN-CROMWELL
Organization	SULLCROM(scl-461)
Country	US
Website	sullcrom.com
Number of IPv4 Routes	3
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1999-04-05

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Use ASN data for AS12142 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
205.134.12.0/24	AS12142	SULLCROM	SULLCROM	256
205.134.0.0/24	AS12142	SULLCROM	SULLCROM	256
205.134.10.0/24	AS12142	SULLCROM	SULLCROM	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:       12142
ASName:         SULLIVAN-CROMWELL
ASHandle:       AS12142
RegDate:        1999-04-05
Updated:        2019-05-24    
Ref:            https://rdap.arin.net/registry/autnum/12142


OrgName:        SULLCROM
OrgId:          SCL-461
Address:        125 Broad Street
City:           New York
StateProv:      NY
PostalCode:     10004
Country:        US
RegDate:        2019-01-29
Updated:        2024-09-27
Ref:            https://rdap.arin.net/registry/entity/SCL-461


OrgTechHandle: WANTE12-ARIN
OrgTechName:   WAN-Team
OrgTechPhone:  +1-212-558-4000 
OrgTechEmail:  ITINF-WAN@sullcrom.com
OrgTechRef:    https://rdap.arin.net/registry/entity/WANTE12-ARIN

OrgAbuseHandle: INFOS33-ARIN
OrgAbuseName:   InfoSec
OrgAbusePhone:  +1-212-558-4000 
OrgAbuseEmail:  infosecalerts@sullcrom.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/INFOS33-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

Peers

AS Number	Description	Country
AS1239	Cogent Communications, LLC	US
AS701	Verizon Business/UUnet	US
AS3356	Level 3 Parent, LLC	US
AS174	Cogent Communications, LLC	US
AS701	Verizon Business	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US
AS174	Cogent Communications, LLC	US
AS701	Verizon Business	US

Frequently Asked Questions

What is ASN AS12142?

ASN AS12142 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS12142?

AS12142 is listed under SULLCROM.

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.