ASN AS21954 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21954?

AS21954 is listed under Telestream, Inc..

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.

AS21954 Telestream, Inc. | IPGeolocation.io

ASN Lookup Tool

Telestream, Inc. telestream.net

US 1 Routes

AS Data

AS21954

AS21954 – Telestream, Inc.

AS Number	21954
AS Name	TELES-27
Organization	Telestream, Inc.(teles-27)
Country	US
Website	telestream.net
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2010-06-29

ASN Intelligence API for production workflows

Use ASN data for AS21954 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
50.236.231.0/24	AS21954	Telestream, Inc.	Comcast Cable Communications, LLC	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:       21954
ASName:         TELES-27
ASHandle:       AS21954
RegDate:        2010-06-29
Updated:        2018-01-04
Comment:        http://www.telestream.net    
Ref:            https://rdap.arin.net/registry/autnum/21954


OrgName:        Telestream, Inc.
OrgId:          TELES-27
Address:        848 Gold Flat Rd
City:           Nevada City
StateProv:      CA
PostalCode:     95959
Country:        US
RegDate:        2010-06-21
Updated:        2012-01-20
Comment:        http://www.telestream.net
Ref:            https://rdap.arin.net/registry/entity/TELES-27


OrgAbuseHandle: MSO92-ARIN
OrgAbuseName:   Onken, Matthew Steven
OrgAbusePhone:  +1-530-264-4049 
OrgAbuseEmail:  it@telestream.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/MSO92-ARIN

OrgTechHandle: MSO92-ARIN
OrgTechName:   Onken, Matthew Steven
OrgTechPhone:  +1-530-264-4049 
OrgTechEmail:  it@telestream.net
OrgTechRef:    https://rdap.arin.net/registry/entity/MSO92-ARIN

OrgNOCHandle: MSO92-ARIN
OrgNOCName:   Onken, Matthew Steven
OrgNOCPhone:  +1-530-264-4049 
OrgNOCEmail:  it@telestream.net
OrgNOCRef:    https://rdap.arin.net/registry/entity/MSO92-ARIN

RAbuseHandle: MSO92-ARIN
RAbuseName:   Onken, Matthew Steven
RAbusePhone:  +1-530-264-4049 
RAbuseEmail:  it@telestream.net
RAbuseRef:    https://rdap.arin.net/registry/entity/MSO92-ARIN

RTechHandle: MSO92-ARIN
RTechName:   Onken, Matthew Steven
RTechPhone:  +1-530-264-4049 
RTechEmail:  it@telestream.net
RTechRef:    https://rdap.arin.net/registry/entity/MSO92-ARIN

RNOCHandle: MSO92-ARIN
RNOCName:   Onken, Matthew Steven
RNOCPhone:  +1-530-264-4049 
RNOCEmail:  it@telestream.net
RNOCRef:    https://rdap.arin.net/registry/entity/MSO92-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
AS33667	Comcast Cable Communications, LLC	US
AS7018	AT&T Enterprises, LLC	US

Upstreams

AS Number	Description	Country
AS33667	Comcast Cable Communications, LLC	US
AS7018	AT&T Enterprises, LLC	US