ASN AS21843 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21843?

AS21843 is listed under City of Buffalo.

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.

AS21843 City of Buffalo | IPGeolocation.io

ASN Lookup Tool

City of Buffalo ci.buffalo.mn.us

US 2 Routes

AS Data

AS21843

AS21843 – City of Buffalo

AS Number	21843
AS Name	CITY-OF-BUFFALO
Organization	City of Buffalo(cityof-136)
Country	US
Website	ci.buffalo.mn.us
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2007-11-15

ASN Intelligence API for production workflows

Use ASN data for AS21843 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
216.105.224.0/20	AS21843	City of Buffalo	City of Buffalo	4096
65.121.12.0/22	AS21843	City of Buffalo	CenturyLink Communications, LLC	1024

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:       21843
ASName:         CITY-OF-BUFFALO
ASHandle:       AS21843
RegDate:        2007-11-15
Updated:        2007-11-15    
Ref:            https://rdap.arin.net/registry/autnum/21843


OrgName:        City of Buffalo
OrgId:          CITYOF-136
Address:        212 Central Avenue
City:           Buffalo
StateProv:      MN
PostalCode:     55313
Country:        US
RegDate:        1998-08-11
Updated:        2024-11-25
Ref:            https://rdap.arin.net/registry/entity/CITYOF-136


OrgAbuseHandle: COOPE170-ARIN
OrgAbuseName:   Cooper, James 
OrgAbusePhone:  +1-763-684-5416 
OrgAbuseEmail:  James.Cooper@ci.buffalo.mn.us
OrgAbuseRef:    https://rdap.arin.net/registry/entity/COOPE170-ARIN

OrgTechHandle: BARES3-ARIN
OrgTechName:   Bares, Jay 
OrgTechPhone:  +1-763-684-5416 
OrgTechEmail:  jay.bares@ci.buffalo.mn.us
OrgTechRef:    https://rdap.arin.net/registry/entity/BARES3-ARIN

OrgNOCHandle: BARES3-ARIN
OrgNOCName:   Bares, Jay 
OrgNOCPhone:  +1-763-684-5416 
OrgNOCEmail:  jay.bares@ci.buffalo.mn.us
OrgNOCRef:    https://rdap.arin.net/registry/entity/BARES3-ARIN

OrgTechHandle: COOPE170-ARIN
OrgTechName:   Cooper, James 
OrgTechPhone:  +1-763-684-5416 
OrgTechEmail:  James.Cooper@ci.buffalo.mn.us
OrgTechRef:    https://rdap.arin.net/registry/entity/COOPE170-ARIN

OrgAbuseHandle: BARES3-ARIN
OrgAbuseName:   Bares, Jay 
OrgAbusePhone:  +1-763-684-5416 
OrgAbuseEmail:  jay.bares@ci.buffalo.mn.us
OrgAbuseRef:    https://rdap.arin.net/registry/entity/BARES3-ARIN

OrgNOCHandle: COOPE170-ARIN
OrgNOCName:   Cooper, James 
OrgNOCPhone:  +1-763-684-5416 
OrgNOCEmail:  James.Cooper@ci.buffalo.mn.us
OrgNOCRef:    https://rdap.arin.net/registry/entity/COOPE170-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
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US