ASN AS21737 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21737?

AS21737 is listed under SpringNet.

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.

AS21737 SpringNet | IPGeolocation.io

ASN Lookup Tool

SpringNet springnet

US 11 Routes

AS Data

AS21737

AS21737 – SpringNet

AS Number	21737
AS Name	SPRINGNET2-NET
Organization	SpringNet(spgn)
Country	US
Website	springnet
Number of IPv4 Routes	10
Number of IPv6 Routes	1
ASN type	ISP
Registry	ARIN
Date Allocated	2001-06-18

ASN Intelligence API for production workflows

Use ASN data for AS21737 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
198.246.200.0/24	AS21737	SpringNet	General Council of the Assemblies of God	256
64.22.225.0/24	AS21737	SpringNet	SpringNet	256
75.98.102.0/24	AS21737	SpringNet	City Utilities	256
75.98.103.0/24	AS21737	SpringNet	Losh Network Services	256
64.22.249.0/24	AS21737	SpringNet	Drury University	256
2001:49b8::/32	AS21737	SpringNet	SpringNet	~79×10²⁷
76.77.128.0/20	AS21737	SpringNet	SpringNet Small Business	4096
64.22.255.0/24	AS21737	SpringNet	WhiteSky Communications, LLC.	256
66.119.0.0/19	AS21737	SpringNet	SpringNet	8192
75.98.96.0/20	AS21737	SpringNet	SpringNet	4096

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:       21737
ASName:         SPRINGNET2-NET
ASHandle:       AS21737
RegDate:        2001-06-18
Updated:        2005-09-29    
Ref:            https://rdap.arin.net/registry/autnum/21737


OrgName:        SpringNet
OrgId:          SPGN
Address:        301 E. Central
City:           Springfield
StateProv:      MO
PostalCode:     65802
Country:        US
RegDate:        2001-06-01
Updated:        2025-02-09
Ref:            https://rdap.arin.net/registry/entity/SPGN


OrgAbuseHandle: ABUSE7702-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-417-874-8000 
OrgAbuseEmail:  abuse@springnet.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE7702-ARIN

OrgDNSHandle: ARINS14-ARIN
OrgDNSName:   arin@springnet
OrgDNSPhone:  +1-417-831-8688 
OrgDNSEmail:  arin@springnet.net
OrgDNSRef:    https://rdap.arin.net/registry/entity/ARINS14-ARIN

OrgTechHandle: ARINS14-ARIN
OrgTechName:   arin@springnet
OrgTechPhone:  +1-417-831-8688 
OrgTechEmail:  arin@springnet.net
OrgTechRef:    https://rdap.arin.net/registry/entity/ARINS14-ARIN

OrgRoutingHandle: ARINS14-ARIN
OrgRoutingName:   arin@springnet
OrgRoutingPhone:  +1-417-831-8688 
OrgRoutingEmail:  arin@springnet.net
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ARINS14-ARIN

OrgNOCHandle: ARINS14-ARIN
OrgNOCName:   arin@springnet
OrgNOCPhone:  +1-417-831-8688 
OrgNOCEmail:  arin@springnet.net
OrgNOCRef:    https://rdap.arin.net/registry/entity/ARINS14-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
AS393577	Tritan Development	US
AS34927	iFog GmbH	CH
AS401538	Nova86	US
AS53343	sc Network	US
AS10242	US Internet Corp	US
AS2914	NTT America, Inc.	US
AS63051	Critical Hosting Solutions LLC	US
AS52025	ParadoxNetworks Limited	GB
AS36236	NetActuate, Inc	US
AS53597	Hoyos Consulting LLC	US

Upstreams

AS Number	Description	Country
AS52025	ParadoxNetworks Limited	GB
AS1299	Arelion Sweden AB	SE
AS2914	NTT America, Inc.	US
AS3356	Level 3 Parent, LLC	US
AS174	Cogent Communications, LLC	US

Downstreams

AS Number	Description	Country
AS21835	Scarsdale Security Systems, Inc.	US
AS33252	Bass Pro, LLC.	US
AS63051	Critical Hosting Solutions LLC	US
AS20296	EXPEDIA, INC	US
AS30628	SRC Automotive Inc.	US
AS393977	Great Southern Bank	US