Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Enterprise allocation +4
- Trust score 69 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About Yahoo
Yahoo is an American web portal that provides the search engine Yahoo Search and related services including My Yahoo, Yahoo Mail, Yahoo News, Yahoo Finance, Yahoo Sports, y!entertainment, yahoo!life, and its advertising platform, Yahoo Native. It is operated by the namesake company Yahoo!
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS26101 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 66.196.104.0/21 | 6,337 | 2026-07-23 20:05:02 |
| 98.137.192.0/21 | 6,330 | 2026-07-23 20:05:02 |
| 66.196.109.0/24 | 6,279 | 2026-07-23 20:05:02 |
| 98.139.16.0/21 | 6,225 | 2026-07-23 20:05:02 |
| 98.139.16.0/24 | 6,214 | 2026-07-23 20:05:02 |
| 98.139.17.0/24 | 6,213 | 2026-07-23 20:05:02 |
| 98.139.8.0/22 | 6,206 | 2026-07-23 20:05:02 |
| 98.139.32.0/20 | 6,199 | 2026-07-23 20:05:02 |
| 69.147.72.0/21 | 6,197 | 2026-07-23 20:05:02 |
| 69.147.112.0/20 | 6,193 | 2026-07-23 20:05:02 |
| 98.139.24.0/21 | 6,184 | 2026-07-23 20:05:02 |
| 66.196.112.0/21 | 6,175 | 2026-07-23 20:05:02 |
| 98.139.199.0/24 | 6,173 | 2026-07-23 20:05:02 |
| 66.196.80.0/21 | 6,172 | 2026-07-23 20:05:02 |
| 98.139.133.0/24 | 6,170 | 2026-07-23 20:05:02 |
| 98.139.124.0/22 | 6,153 | 2026-07-23 20:05:02 |
| 98.139.128.0/17 | 6,139 | 2026-07-23 20:05:01 |
| 98.139.155.0/24 | 6,135 | 2026-07-23 20:05:02 |
| 69.147.120.0/21 | 6,108 | 2026-07-23 20:05:06 |
| 67.195.216.0/22 | 6,103 | 2026-07-23 20:05:06 |
| 74.6.144.0/22 | 6,099 | 2026-07-23 20:05:02 |
| 72.30.35.0/24 | 6,087 | 2026-07-23 20:05:02 |
| 98.139.44.0/23 | 6,074 | 2026-07-23 20:05:02 |
| 74.6.147.0/24 | 6,069 | 2026-07-23 20:05:02 |
| 66.196.88.0/23 | 6,068 | 2026-07-23 20:05:02 |
| 98.139.225.0/24 | 6,051 | 2026-07-23 20:05:02 |
| 98.139.21.0/24 | 6,047 | 2026-07-23 20:05:02 |
| 72.30.205.0/24 | 6,045 | 2026-07-23 20:05:02 |
| 72.30.3.0/24 | 6,043 | 2026-07-23 20:05:02 |
| 72.30.32.0/19 | 6,042 | 2026-07-23 20:05:02 |
| 74.6.148.0/22 | 6,035 | 2026-07-23 20:05:02 |
| 74.6.145.0/24 | 6,021 | 2026-07-23 20:05:02 |
| 74.6.48.0/22 | 6,018 | 2026-07-23 20:05:02 |
| 74.6.248.0/21 | 6,012 | 2026-07-23 20:05:02 |
| 74.6.146.0/24 | 6,007 | 2026-07-23 20:05:02 |
| 74.6.128.0/21 | 6,006 | 2026-07-23 20:05:02 |
| 72.30.2.0/24 | 6,005 | 2026-07-23 20:05:02 |
| 72.30.0.0/19 | 5,997 | 2026-07-23 20:05:02 |
| 66.218.80.0/20 | 5,994 | 2026-07-23 20:05:02 |
| 67.195.204.0/22 | 5,993 | 2026-07-23 20:05:02 |
| 68.142.232.0/22 | 5,986 | 2026-07-23 20:05:02 |
| 72.30.192.0/20 | 5,980 | 2026-07-23 20:05:02 |
| 209.73.180.0/22 | 5,979 | 2026-07-23 20:05:02 |
| 67.195.176.0/20 | 5,976 | 2026-07-23 20:05:02 |
| 74.6.144.0/24 | 5,975 | 2026-07-23 20:05:02 |
| 67.195.204.0/24 | 5,974 | 2026-07-23 20:05:02 |
| 74.6.143.0/24 | 5,974 | 2026-07-23 20:05:02 |
| 74.6.136.0/22 | 5,969 | 2026-07-23 20:05:02 |
| 74.6.141.0/24 | 5,964 | 2026-07-23 20:05:02 |
| 74.6.140.0/24 | 5,964 | 2026-07-23 20:05:02 |
Showing top 50 of 76 announced prefixes by sample volume.
Frequently Asked Questions
What is AS26101?
AS26101 is an Autonomous System Number assigned to Yahoo Holdings Inc.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS26101 announce?
AS26101 announces 121.3K IPv4 addresses distributed across 27 routed CIDR prefixes. The network is registered in United States.
Who operates AS26101?
AS26101 is operated by Yahoo Holdings Inc.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS26101 registered in?
AS26101 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
