ASN AS11303 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS11303?

AS11303 is listed under Verizon Business.

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.

AS11303 Verizon Business | IPGeolocation.io

ASN Lookup Tool

Verizon Business verizon.com

US 1 Routes

AS Data

AS11303

AS11303 – Verizon Business

AS Number	11303
AS Name	DATARETURN
Organization	Verizon Business(mcics)
Country	US
Website	verizon.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1998-06-22

ASN Intelligence API for production workflows

Use ASN data for AS11303 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
199.45.60.0/24	AS11303	Verizon Business	Verizon Business	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:       11303
ASName:         DATARETURN
ASHandle:       AS11303
RegDate:        1998-06-22
Updated:        2022-05-31
Comment:        For abuse concerns, please contact vzcloudhelp@verizon.com    
Ref:            https://rdap.arin.net/registry/autnum/11303



OrgName:        Verizon Business
OrgId:          MCICS
Address:        22001 Loudoun County Pkwy
City:           Ashburn
StateProv:      VA
PostalCode:     20147
Country:        US
RegDate:        2006-05-30
Updated:        2025-10-28
Ref:            https://rdap.arin.net/registry/entity/MCICS


OrgAbuseHandle: ABUSE5603-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-800-900-0241 
OrgAbuseEmail:  abuse@verizon.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE5603-ARIN

OrgDNSHandle: VZDNS1-ARIN
OrgDNSName:   VZ-DNSADMIN
OrgDNSPhone:  +1-800-900-0241 
OrgDNSEmail:  dnsadmin@verizon.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/VZDNS1-ARIN

OrgTechHandle: SWIPP9-ARIN
OrgTechName:   SWIPPER
OrgTechPhone:  +1-800-900-0241 
OrgTechEmail:  swipper@verizon.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SWIPP9-ARIN

OrgTechHandle: VIS1-ARIN
OrgTechName:   Verizon Internet Services
OrgTechPhone:  +1-800-243-6994 
OrgTechEmail:  IPMGMT@verizon.com
OrgTechRef:    https://rdap.arin.net/registry/entity/VIS1-ARIN

OrgAbuseHandle: ABUSE3-ARIN
OrgAbuseName:   abuse
OrgAbusePhone:  +1-800-900-0241 
OrgAbuseEmail:  abuse@verizon.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE3-ARIN

RAbuseHandle: IHT-ARIN
RAbuseName:   IP Help Terremark
RAbusePhone:  +1-800-900-0241 
RAbuseEmail:  vzcloudhelp@verizon.com
RAbuseRef:    https://rdap.arin.net/registry/entity/IHT-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
AS701	Verizon Business/UUnet	US
AS701	Verizon Business	US

Upstreams

AS Number	Description	Country
AS701	Verizon Business	US

Contacts

Email Contacts

IPMGMT@verizon.com swipper@verizon.com

Abuse Contacts

abuse@verizon.com