ASN Lookup Tool

Yahoo Holdings Inc. yahooinc.com US US 83 Routes

AS Data

AS26101

AS26101 – Yahoo Holdings Inc.

AS Number 26101
AS Name YAHOO-BF1
Organization Yahoo Holdings Inc.(oh-207)
Country US
Website yahooinc.com
Number of IPv4 Routes 76
Number of IPv6 Routes 7
ASN type BUSINESS
Registry ARIN
Date Allocated 2002-07-05

ASN Intelligence API for production workflows

Use ASN data for AS26101 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

Get ASN API Key ASN API Docs

IP Ranges

Route # IPs
66.218.87.0/24 256
67.195.205.0/24 256
74.6.248.0/21 2048
98.139.8.0/22 1024
74.6.139.0/24 256
66.218.80.0/20 4096
74.6.143.0/24 256
2001:4998:124::/48 ~1×10²⁴
2001:4998:58::/46 ~5×10²⁴
98.139.199.0/24 256

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:       26101
ASName:         YAHOO-BF1
ASHandle:       AS26101
RegDate:        2002-07-05
Updated:        2020-07-21    
Ref:            https://rdap.arin.net/registry/autnum/26101


OrgName:        Yahoo Holdings Inc.
OrgId:          OH-207
Address:        770 BROADWAY FL 9
City:           New York
StateProv:      NY
PostalCode:     10003-9558
Country:        US
RegDate:        2018-12-21
Updated:        2025-09-03
Ref:            https://rdap.arin.net/registry/entity/OH-207


OrgNOCHandle: OATHN-ARIN
OrgNOCName:   Oath NOC
OrgNOCPhone:  +1-408-349-5555 
OrgNOCEmail:  rir-noc@yahooinc.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/OATHN-ARIN

OrgAbuseHandle: OATHA-ARIN
OrgAbuseName:   Oath Abuse
OrgAbusePhone:  +1-408-349-3300 
OrgAbuseEmail:  rir-abuse@yahooinc.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/OATHA-ARIN

OrgTechHandle: OTC2-ARIN
OrgTechName:   Oath Tech Contact
OrgTechPhone:  +1-408-349-5555 
OrgTechEmail:  rir-tech@yahooinc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/OTC2-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
AS10310 Yahoo Holdings Inc. US

Upstreams

AS Number Description Country
AS10310 Yahoo Holdings Inc. US

Contacts

Email Contacts

rir-tech@yahooinc.com

Abuse Contacts

rir-abuse@yahooinc.com

Ready to get started?Get Started with IP Intelligence API Today

Get Started
CTA Illustration

Frequently Asked Questions

ASN AS26101 is an Autonomous System Number used to identify a network for BGP internet routing.
AS26101 is listed under Yahoo Holdings Inc..
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.