ASN AS29891 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS29891?

AS29891 is listed under National Cable Communications LLC.

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.

AS29891 National Cable Communications LLC

ASN Lookup Tool

National Cable Communications LLC spotcable.com

US 4 Routes

AS Data

AS29891

AS29891 – National Cable Communications LLC

AS Number	29891
AS Name	NCCWO-ASN1-VZBLVL3CMCST
Organization	National Cable Communications LLC(nccl-4)
Country	US
Website	spotcable.com
Number of IPv4 Routes	4
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2003-05-29

ASN Intelligence API for production workflows

Use ASN data for AS29891 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
63.97.151.0/24	AS29891	National Cable Communications LLC	National Cable Commu	256
50.227.87.0/24	AS29891	National Cable Communications LLC	Comcast Cable Communications, LLC	256
50.236.110.0/24	AS29891	National Cable Communications LLC	Comcast Cable Communications, LLC	256
216.143.178.0/24	AS29891	National Cable Communications LLC	National Cable Communications	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:       29891
ASName:         NCCWO-ASN1-VZBLVL3CMCST
ASHandle:       AS29891
RegDate:        2003-05-29
Updated:        2013-10-23    
Ref:            https://rdap.arin.net/registry/autnum/29891


OrgName:        National Cable Communications LLC
OrgId:          NCCL-4
Address:        300 Executive Drive
Address:        Suite 050
City:           West Orange
StateProv:      NJ
PostalCode:     07052
Country:        US
RegDate:        2003-05-27
Updated:        2012-02-23
Comment:        www.nccmedia.com
Ref:            https://rdap.arin.net/registry/entity/NCCL-4


OrgNOCHandle: NETWO4984-ARIN
OrgNOCName:   Network Technology
OrgNOCPhone:  +1-973-789-9889 
OrgNOCEmail:  _networksupport@spotcable.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO4984-ARIN

OrgTechHandle: SWE6-ARIN
OrgTechName:   Weingarten, Seth 
OrgTechPhone:  +1-973-780-1700 
OrgTechEmail:  seth_weingarten@spotcable.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SWE6-ARIN

OrgAbuseHandle: NETWO4984-ARIN
OrgAbuseName:   Network Technology
OrgAbusePhone:  +1-973-789-9889 
OrgAbuseEmail:  _networksupport@spotcable.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO4984-ARIN

RAbuseHandle: SWE6-ARIN
RAbuseName:   Weingarten, Seth 
RAbusePhone:  +1-973-780-1700 
RAbuseEmail:  seth_weingarten@spotcable.com
RAbuseRef:    https://rdap.arin.net/registry/entity/SWE6-ARIN

RTechHandle: SWE6-ARIN
RTechName:   Weingarten, Seth 
RTechPhone:  +1-973-780-1700 
RTechEmail:  seth_weingarten@spotcable.com
RTechRef:    https://rdap.arin.net/registry/entity/SWE6-ARIN

RNOCHandle: NETWO4984-ARIN
RNOCName:   Network Technology
RNOCPhone:  +1-973-789-9889 
RNOCEmail:  _networksupport@spotcable.com
RNOCRef:    https://rdap.arin.net/registry/entity/NETWO4984-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
AS33491	Comcast Cable Communications, LLC	US
AS701	Verizon Business/UUnet	US
AS3356	Level 3 Parent, LLC	US
AS33659	Comcast Cable Communications, LLC	US
AS701	Verizon Business	US

Upstreams

AS Number	Description	Country
AS33491	Comcast Cable Communications, LLC	US
AS3356	Level 3 Parent, LLC	US
AS33659	Comcast Cable Communications, LLC	US
AS701	Verizon Business	US