ASN AS33321 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS33321?

AS33321 is listed under Zayo Bandwidth.

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.

AS33321 Zayo Bandwidth | IPGeolocation.io

ASN Lookup Tool

Zayo Bandwidth zayo.com

US 6 Routes

AS Data

AS33321

AS33321 – Zayo Bandwidth

AS Number	33321
AS Name	ZAYO-33321
Organization	Zayo Bandwidth(zayob)
Country	US
Website	zayo.com
Number of IPv4 Routes	6
Number of IPv6 Routes	0
ASN type	ISP
Registry	ARIN
Date Allocated	2017-01-04

ASN Intelligence API for production workflows

Use ASN data for AS33321 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
209.124.162.0/24	AS33321	Zayo Bandwidth	Barcoding Inc.	256
209.124.166.0/24	AS33321	Zayo Bandwidth	American Registry for Internet Numbers	256
128.177.93.0/24	AS33321	Zayo Bandwidth	Brocade Communications Systems, Inc	256
209.124.160.0/20	AS33321	Zayo Bandwidth	Vision Multimedia Technologies, LLC	4096
209.124.160.0/24	AS33321	Zayo Bandwidth	Vision Multimedia Technologies, LLC	256
209.124.174.0/24	AS33321	Zayo Bandwidth	American Registry for Internet Numbers	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:       33321
ASName:         ZAYO-33321
ASHandle:       AS33321
RegDate:        2017-01-04
Updated:        2017-01-04    
Ref:            https://rdap.arin.net/registry/autnum/33321


OrgName:        Zayo Bandwidth
OrgId:          ZAYOB
Address:        1401 Wynkoop St.
Address:        #500
City:           Denver
StateProv:      CO
PostalCode:     80202
Country:        US
RegDate:        2007-10-12
Updated:        2024-11-25
Ref:            https://rdap.arin.net/registry/entity/ZAYOB


OrgTechHandle: ZIE-ARIN
OrgTechName:   Zayo IP Engineering
OrgTechPhone:  +1-866-236-2824 
OrgTechEmail:  ipeng@zayo.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ZIE-ARIN

OrgNOCHandle: ZIE-ARIN
OrgNOCName:   Zayo IP Engineering
OrgNOCPhone:  +1-866-236-2824 
OrgNOCEmail:  ipeng@zayo.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/ZIE-ARIN

OrgAbuseHandle: ABUSE5675-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-866-236-2824 
OrgAbuseEmail:  abuse@zayo.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE5675-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
AS6461	Zayo Bandwidth	US

Upstreams

AS Number	Description	Country
AS6461	Zayo Bandwidth	US

Contacts

Email Contacts

ipeng@zayo.com

Abuse Contacts

abuse@zayo.com