ASN AS21918 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21918?

AS21918 is listed under Metronet.

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.

AS21918 Metronet | IPGeolocation.io

ASN Lookup Tool

Metronet metronetinc.com

US 29 Routes

AS Data

AS21918

AS21918 – Metronet

AS Number	21918
AS Name	ELECTRONET
Organization	Metronet(ciner-3)
Country	US
Website	metronetinc.com
Number of IPv4 Routes	29
Number of IPv6 Routes	0
ASN type	ISP
Registry	ARIN
Date Allocated	2001-07-12

ASN Intelligence API for production workflows

Use ASN data for AS21918 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
216.173.167.0/24	AS21918	Metronet	Metronet	256
216.173.175.0/24	AS21918	Metronet	Metronet	256
216.173.162.0/24	AS21918	Metronet	Metronet	256
216.173.191.0/24	AS21918	Metronet	Metronet	256
216.173.183.0/24	AS21918	Metronet	Metronet	256
216.173.176.0/24	AS21918	Metronet	Metronet	256
216.173.187.0/24	AS21918	Metronet	Metronet	256
216.173.182.0/24	AS21918	Metronet	Metronet	256
216.173.160.0/19	AS21918	Metronet	Metronet	8192
216.173.168.0/24	AS21918	Metronet	Metronet	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:       21918
ASName:         ELECTRONET
ASHandle:       AS21918
RegDate:        2001-07-12
Updated:        2022-07-06    
Ref:            https://rdap.arin.net/registry/autnum/21918


OrgName:        Metronet
OrgId:          CINER-3
Address:        11880 College Blvd., Suite 100
City:           Overland Park
StateProv:      KS
PostalCode:     66210
Country:        US
RegDate:        2009-03-11
Updated:        2025-05-07
Comment:        Geofeed: https://static.metronetinc.com/geoip/feed.csv
Ref:            https://rdap.arin.net/registry/entity/CINER-3


OrgDNSHandle: HCM2-ARIN
OrgDNSName:   hostmaster for Cinergy Metronet
OrgDNSPhone:  +1-877-407-3224 
OrgDNSEmail:  CMN-hostmaster@metronetinc.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/HCM2-ARIN

OrgAbuseHandle: ABUSE2202-ARIN
OrgAbuseName:   Abuse Master
OrgAbusePhone:  +1-877-407-3224 
OrgAbuseEmail:  abuse@metronetinc.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE2202-ARIN

OrgAbuseHandle: TIERI-ARIN
OrgAbuseName:   Tier III
OrgAbusePhone:  +1-877-407-3224 
OrgAbuseEmail:  TierIII@metronetinc.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/TIERI-ARIN

OrgTechHandle: TIERI-ARIN
OrgTechName:   Tier III
OrgTechPhone:  +1-877-407-3224 
OrgTechEmail:  TierIII@metronetinc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/TIERI-ARIN

OrgRoutingHandle: TIERI-ARIN
OrgRoutingName:   Tier III
OrgRoutingPhone:  +1-877-407-3224 
OrgRoutingEmail:  TierIII@metronetinc.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/TIERI-ARIN

OrgNOCHandle: TIERI-ARIN
OrgNOCName:   Tier III
OrgNOCPhone:  +1-877-407-3224 
OrgNOCEmail:  TierIII@metronetinc.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/TIERI-ARIN

OrgTechHandle: CIM5-ARIN
OrgTechName:   CMN IP management
OrgTechPhone:  +1-833-266-5812 
OrgTechEmail:  CMN-ARIN@metronetinc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CIM5-ARIN

OrgNOCHandle: NOC33059-ARIN
OrgNOCName:   NOC
OrgNOCPhone:  +1-833-266-5812 
OrgNOCEmail:  MFN-NOC@metronetinc.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC33059-ARIN

OrgDNSHandle: TIERI-ARIN
OrgDNSName:   Tier III
OrgDNSPhone:  +1-877-407-3224 
OrgDNSEmail:  TierIII@metronetinc.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/TIERI-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
AS30600	Metronet	US

Upstreams

AS Number	Description	Country
AS30600	Metronet	US

Contacts

Email Contacts

TierIII@metronetinc.com CMN-ARIN@metronetinc.com

Abuse Contacts

abuse@metronetinc.com