ASN AS3912 is an Autonomous System Number used to identify a network for BGP internet routing.

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?

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AS3912 CHECS | IPGeolocation.io

ASN Lookup Tool

CHECS checs.net

US 17 Routes

AS Data

AS3912

AS3912 – CHECS

AS Number	3912
AS Name	CHECS
Organization	CHECS(checsn-z)
Country	US
Website	checs.net
Number of IPv4 Routes	16
Number of IPv6 Routes	1
ASN type	ISP
Registry	ARIN
Date Allocated	1996-10-01

ASN Intelligence API for production workflows

Use ASN data for AS3912 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
204.134.66.0/24	AS3912	CHECS	CenturyLink Communications, LLC	256
192.88.137.0/24	AS3912	CHECS	New Mexico State University	256
204.134.48.0/24	AS3912	CHECS	CenturyLink Communications, LLC	256
204.134.55.0/24	AS3912	CHECS	CenturyLink Communications, LLC	256
192.88.139.0/24	AS3912	CHECS	New Mexico State University Main Campus	256
2607:7840::/32	AS3912	CHECS	CHECS	~79×10²⁷
216.161.32.0/23	AS3912	CHECS	CenturyLink Communications, LLC	512
204.134.56.0/23	AS3912	CHECS	CenturyLink Communications, LLC	512
63.225.1.0/24	AS3912	CHECS	CENTURYLINK, INC.	256
204.134.103.0/24	AS3912	CHECS	CenturyLink Communications, 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:       3912
ASName:         CHECS
ASHandle:       AS3912
RegDate:        1996-10-01
Updated:        2023-09-27    
Ref:            https://rdap.arin.net/registry/autnum/3912


OrgName:        CHECS
OrgId:          CHECSN-Z
Address:        Box 30001 MSC 3AT
City:           Las Cruces
StateProv:      NM
PostalCode:     88033
Country:        US
RegDate:        2018-04-17
Updated:        2018-11-19
Ref:            https://rdap.arin.net/registry/entity/CHECSN-Z


OrgAbuseHandle: CHECS-ARIN
OrgAbuseName:   CHECS NOC
OrgAbusePhone:  +1-575-646-5999 
OrgAbuseEmail:  noc@checs.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CHECS-ARIN

OrgNOCHandle: CHECS-ARIN
OrgNOCName:   CHECS NOC
OrgNOCPhone:  +1-575-646-5999 
OrgNOCEmail:  noc@checs.net
OrgNOCRef:    https://rdap.arin.net/registry/entity/CHECS-ARIN

OrgTechHandle: CHECS-ARIN
OrgTechName:   CHECS NOC
OrgTechPhone:  +1-575-646-5999 
OrgTechEmail:  noc@checs.net
OrgTechRef:    https://rdap.arin.net/registry/entity/CHECS-ARIN

RNOCHandle: CHECS-ARIN
RNOCName:   CHECS NOC
RNOCPhone:  +1-575-646-5999 
RNOCEmail:  noc@checs.net
RNOCRef:    https://rdap.arin.net/registry/entity/CHECS-ARIN

RTechHandle: CHECS-ARIN
RTechName:   CHECS NOC
RTechPhone:  +1-575-646-5999 
RTechEmail:  noc@checs.net
RTechRef:    https://rdap.arin.net/registry/entity/CHECS-ARIN

RAbuseHandle: CHECS-ARIN
RAbuseName:   CHECS NOC
RAbusePhone:  +1-575-646-5999 
RAbuseEmail:  noc@checs.net
RAbuseRef:    https://rdap.arin.net/registry/entity/CHECS-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
AS40246	New Mexico State University	US
AS17153	New Mexico Tech	US
AS397535	Western New Mexico University	US
AS40498	New Mexico Lambda Rail, Inc.	US
AS32505	Conterra	US
AS21782	Plateau Telecommunications Incorporated	US

Upstreams

AS Number	Description	Country
AS40498	New Mexico Lambda Rail, Inc.	US
AS32505	Conterra	US
AS21782	Plateau Telecommunications Incorporated	US

Downstreams

AS Number	Description	Country
AS40246	New Mexico State University	US
AS17153	New Mexico Tech	US
AS397535	Western New Mexico University	US
AS40498	New Mexico Lambda Rail, Inc.	US
AS32505	Conterra	US