ASN AS20123 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS20123?

AS20123 is listed under NOS Network Operations Group.

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.

AS20123 NOS Network Operations Group

ASN Lookup Tool

NOS Network Operations Group aninetworks.com

US 1 Routes

AS Data

AS20123

AS20123 – NOS Network Operations Group

AS Number	20123
AS Name	NOS-NOG2
Organization	NOS Network Operations Group(nnog)
Country	US
Website	aninetworks.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	ISP
Registry	ARIN
Date Allocated	2007-09-04

ASN Intelligence API for production workflows

Use ASN data for AS20123 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
208.69.81.0/24	AS20123	NOS Network Operations Group	NOS Network Operations Group	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:       20123
ASName:         NOS-NOG2
ASHandle:       AS20123
RegDate:        2007-09-04
Updated:        2018-10-21    
Ref:            https://rdap.arin.net/registry/autnum/20123


OrgName:        NOS Network Operations Group
OrgId:          NNOG
Address:        909 North Sepulveda Blvd.
Address:        Suite 300
City:           El Segundo
StateProv:      CA
PostalCode:     90245
Country:        US
RegDate:        2005-05-02
Updated:        2018-10-19
Ref:            https://rdap.arin.net/registry/entity/NNOG


OrgTechHandle: VANGM-ARIN
OrgTechName:   Vang, Mao 
OrgTechPhone:  +1-310-321-5706 
OrgTechEmail:  mvang@aninetworks.com
OrgTechRef:    https://rdap.arin.net/registry/entity/VANGM-ARIN

OrgNOCHandle: NOC11849-ARIN
OrgNOCName:   Network Operations Center
OrgNOCPhone:  +1-310-321-5775 
OrgNOCEmail:  noc@aninetworks.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC11849-ARIN

OrgTechHandle: NOC11849-ARIN
OrgTechName:   Network Operations Center
OrgTechPhone:  +1-310-321-5775 
OrgTechEmail:  noc@aninetworks.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NOC11849-ARIN

OrgTechHandle: JJA99-ARIN
OrgTechName:   Jackson, Joseph 
OrgTechPhone:  +1-702-547-8000 
OrgTechEmail:  jjackson@aninetworks.net
OrgTechRef:    https://rdap.arin.net/registry/entity/JJA99-ARIN

OrgAbuseHandle: NOC11849-ARIN
OrgAbuseName:   Network Operations Center
OrgAbusePhone:  +1-310-321-5775 
OrgAbuseEmail:  noc@aninetworks.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NOC11849-ARIN

OrgTechHandle: GREEN1362-ARIN
OrgTechName:   Green, Andrew 
OrgTechPhone:  +1-310-321-5700 
OrgTechEmail:  agreen@aninetworks.com
OrgTechRef:    https://rdap.arin.net/registry/entity/GREEN1362-ARIN

RAbuseHandle: JJA99-ARIN
RAbuseName:   Jackson, Joseph 
RAbusePhone:  +1-702-547-8000 
RAbuseEmail:  jjackson@aninetworks.net
RAbuseRef:    https://rdap.arin.net/registry/entity/JJA99-ARIN

RTechHandle: JJA99-ARIN
RTechName:   Jackson, Joseph 
RTechPhone:  +1-702-547-8000 
RTechEmail:  jjackson@aninetworks.net
RTechRef:    https://rdap.arin.net/registry/entity/JJA99-ARIN

RNOCHandle: NOC11849-ARIN
RNOCName:   Network Operations Center
RNOCPhone:  +1-310-321-5775 
RNOCEmail:  noc@aninetworks.com
RNOCRef:    https://rdap.arin.net/registry/entity/NOC11849-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
AS2914	NTT America, Inc.	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS2914	NTT America, Inc.	US
AS3356	Level 3 Parent, LLC	US