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Autonomous System

AS10310

Yahoo Holdings Inc.

Announced IPs
78,848
CIDR prefixes
82
ASN
AS10310

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.

69/100
Moderate
How this score is built
  • Baseline (neutral) 65
  • Enterprise allocation +4
  • Trust score 69 / 100

Experimental · trust-vectors model v1.1.0 — 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!

Founded
1994
Headquarters
Sunnyvale
Industry
web portal

Network profile

Source: PeeringDB →
Network type Content
Geographic scope Global
Traffic ratio Mostly Outbound
Peering policy Selective
IRR record AS-YAHOO

Present at 88 internet exchanges: Equinix Chicago, Equinix Dallas, Equinix Los Angeles, Equinix San Jose, Equinix Palo Alto, Equinix Seattle, Equinix New York, SIX Seattle: MTU 1500, NYIIX New York, NYIIX Los Angeles, …

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
184.165.16.0/20 4.1K
8.6%
Yahoo Holdings Inc. US California San Francisco
202.160.176.0/20 4.1K
5.9%
Yahoo Holdings Inc. CN
209.131.48.0/20 4.1K
0.0%
US California Sunnyvale
209.191.64.0/20 4.1K
12.7%
Yahoo Holdings Inc. US Colorado Denver
209.191.112.0/20 4.1K
3.6%
Yahoo Holdings Inc. US
216.115.96.0/20 4.1K
77.9%
Yahoo Holdings Inc. US California Los Angeles
66.196.64.0/21 2.0K
71.6%
Yahoo Holdings Inc. US
68.180.136.0/21 2.0K
23.4%
Yahoo Holdings Inc. US California Sunnyvale
124.108.64.0/21 2.0K
12.1%
Yahoo Holdings Inc. HK
180.233.112.0/21 2.0K
60.0%
Yahoo Holdings Inc. HK
184.165.0.0/21 2.0K
37.6%
Yahoo Holdings Inc. US New York New York
202.43.216.0/21 2.0K
23.4%
Yahoo Holdings Inc. HK
202.160.184.0/21 2.0K
0.0%
SG
203.104.16.0/21 2.0K
34.1%
Yahoo Holdings Inc. US
209.131.56.0/21 2.0K
30.7%
Yahoo Holdings Inc. US New York Lockport
209.191.80.0/21 2.0K
7.8%
Yahoo Holdings Inc. US
209.191.120.0/21 2.0K
0.0%
US
216.115.96.0/21 2.0K
0.0%
US New York Buffalo
216.252.96.0/21 2.0K
19.9%
Yahoo Holdings Inc. US
27.123.44.0/22 1.0K
0.0%
Yahoo Holdings Inc. HK
66.196.88.0/22 1.0K
0.0%
US Texas Dallas
72.30.220.0/22 1.0K
72.3%
Yahoo Holdings Inc. US Florida Miami
74.6.224.0/22 1.0K
96.1%
Yahoo Holdings Inc. US Florida Miami
77.238.168.0/22 1.0K
49.5%
Yahoo Holdings Inc. GB
115.178.12.0/22 1.0K
24.2%
Yahoo Holdings Inc. HK
124.108.76.0/22 1.0K
73.5%
Yahoo Holdings Inc. HK
124.108.80.0/22 1.0K
23.5%
Yahoo Holdings Inc. HK
180.222.104.0/22 1.0K
22.9%
Yahoo Holdings Inc. US
183.177.76.0/22 1.0K
96.8%
Yahoo Holdings Inc. HK
183.177.84.0/22 1.0K
0.0%
Yahoo Holdings Inc. HK
184.165.12.0/22 1.0K
49.2%
Yahoo Holdings Inc. US California Playa Vista
188.125.88.0/22 1.0K
67.5%
Yahoo Holdings Inc. GB
193.93.196.0/22 1.0K
70.3%
Yahoo Holdings Inc. GB
200.152.164.0/22 1.0K
93.8%
Yahoo Holdings Inc. BR Ceará Fortaleza
200.152.172.0/22 1.0K
94.8%
Yahoo Holdings Inc. BR
202.43.204.0/22 1.0K
0.0%
Yahoo Holdings Inc. HK
202.160.180.0/22 1.0K
0.0%
SG
203.84.208.0/22 1.0K
92.8%
Yahoo Holdings Inc. HK
203.110.236.0/22 1.0K
24.2%
Yahoo Holdings Inc. HK
209.131.52.0/22 1.0K
58.5%
Yahoo Holdings Inc. US District of Columbia Washington
209.191.84.0/22 1.0K
0.0%
US
209.191.116.0/22 1.0K
0.0%
US
27.123.34.0/23 512
48.6%
Yahoo Holdings Inc. HK
27.123.192.0/23 512
48.8%
Yahoo Holdings Inc. HK
27.123.196.0/23 512
0.0%
Yahoo Holdings Inc. HK
66.196.90.0/23 512
81.4%
Yahoo Holdings Inc. US
68.180.132.0/23 512
46.7%
Yahoo Holdings Inc. US
77.238.172.0/23 512
0.0%
Yahoo Holdings Inc. GB
103.40.110.0/23 512
46.7%
Yahoo Holdings Inc. HK
115.178.4.0/23 512
0.0%
Yahoo Holdings Inc. HK
115.178.10.0/23 512
0.0%
Yahoo Holdings Inc. HK
124.108.84.0/23 512
0.0%
Yahoo Holdings Inc. HK
180.222.104.0/23 512
0.0%
US
180.222.106.0/23 512
0.0%
TW Taoyuan Taoyuan
183.177.68.0/23 512
97.3%
Yahoo Holdings Inc. HK
183.177.74.0/23 512
0.0%
Yahoo Holdings Inc. HK
183.177.80.0/23 512
96.1%
Yahoo Holdings Inc. HK
183.177.90.0/23 512
0.0%
Yahoo Holdings Inc. HK
184.165.8.0/23 512
34.0%
Yahoo Holdings Inc. US
188.125.94.0/23 512
85.7%
Yahoo Holdings Inc. GB
193.93.196.0/23 512
0.0%
IE
200.152.160.0/23 512
95.7%
Yahoo Holdings Inc. BR São Paulo São Paulo
202.43.202.0/23 512
0.0%
Yahoo Holdings Inc. HK
202.93.6.0/23 512
93.4%
Yahoo Holdings Inc. KR
202.160.178.0/23 512
0.0%
SG
202.165.98.0/23 512
0.0%
Yahoo Holdings Inc. US
202.165.108.0/23 512
47.5%
Yahoo Holdings Inc. US
203.84.214.0/23 512
48.2%
Yahoo Holdings Inc. HK
209.131.50.0/23 512
76.2%
Yahoo Holdings Inc. US California San Francisco
209.191.82.0/23 512
0.0%
US
209.191.114.0/23 512
0.0%
US
212.82.118.0/23 512
49.8%
Yahoo Holdings Inc. GB
216.115.106.0/23 512
0.0%
US California Los Angeles
216.115.108.0/23 512
0.0%
US California San Jose
27.123.33.0/24 256
0.0%
Yahoo Holdings Inc. HK
27.123.37.0/24 256
95.3%
Yahoo Holdings Inc. HK
66.196.69.0/24 256
0.0%
IE Leinster Dublin
66.196.70.0/24 256
0.0%
US
66.196.71.0/24 256
0.0%
GB England London
67.195.249.0/24 256
98.8%
Yahoo Holdings Inc. US California San Francisco
68.142.248.0/24 256
94.1%
Yahoo Holdings Inc. US
68.142.253.0/24 256
95.7%
Yahoo Holdings Inc. US
68.180.128.0/24 256
93.8%
Yahoo Holdings Inc. US
69.147.67.0/24 256
0.0%
Yahoo Holdings Inc. US
77.238.174.0/24 256
0.0%
Yahoo Holdings Inc. GB
77.238.183.0/24 256
99.6%
Yahoo Holdings Inc. GB
77.238.189.0/24 256
0.0%
Yahoo Holdings Inc. GB
87.248.107.0/24 256
94.5%
Yahoo Holdings Inc. GB
102.165.180.0/24 256
100.0%
Yahoo Holdings Inc. ZA Gauteng Johannesburg
102.165.183.0/24 256
0.0%
Yahoo Holdings Inc. ZA
115.178.3.0/24 256
0.0%
Yahoo Holdings Inc. HK
180.222.99.0/24 256
84.8%
Yahoo Holdings Inc. US
180.222.111.0/24 256
91.8%
Yahoo Holdings Inc. US
183.177.68.0/24 256
0.0%
AU New South Wales Sydney
183.177.69.0/24 256
0.0%
TW
183.177.80.0/24 256
0.0%
SG
184.165.11.0/24 256
0.0%
Yahoo Holdings Inc. US New York New York
188.125.88.0/24 256
0.0%
FR Provence-Alpes-Côte d'Azur Marseille
188.125.89.0/24 256
0.0%
AT State of Vienna Vienna
188.125.90.0/24 256
0.0%
RO Bucharest Bucharest

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS10310 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
202.160.176.0/20 22,938 2026-07-20 07:19:51
183.177.76.0/22 22,924 2026-07-20 07:19:51
202.43.216.0/21 22,793 2026-07-20 07:19:51
180.222.112.0/21 22,584 2026-07-20 07:19:51
183.177.69.0/24 22,566 2026-07-20 07:19:51
180.222.104.0/21 22,554 2026-07-20 07:19:51
27.123.34.0/23 22,219 2026-07-20 07:19:51
203.84.213.0/24 20,693 2026-07-20 07:19:51
183.177.80.0/23 20,587 2026-07-20 07:19:51
27.123.37.0/24 19,656 2026-07-20 07:19:51
203.84.210.0/23 16,492 2026-07-20 07:19:51
203.84.208.0/23 16,474 2026-07-20 07:19:51
124.108.76.0/23 15,945 2026-07-20 07:19:51
203.110.236.0/22 14,161 2026-07-20 07:19:33
202.165.98.0/23 14,114 2026-07-20 07:19:33
202.165.108.0/23 14,114 2026-07-20 07:19:33
203.84.214.0/23 14,110 2026-07-20 07:19:33
203.104.16.0/21 14,095 2026-07-20 07:19:33
202.93.6.0/23 14,084 2026-07-20 07:19:33
202.165.96.0/24 14,073 2026-07-20 07:19:33
202.171.234.0/24 14,063 2026-07-20 07:19:37
180.233.112.0/21 14,056 2026-07-20 07:19:37
202.43.204.0/22 14,026 2026-07-20 07:19:33
202.43.202.0/23 14,007 2026-07-20 07:19:37
202.47.143.0/24 13,996 2026-07-20 07:19:33
183.177.84.0/22 13,957 2026-07-20 07:19:33
183.177.74.0/23 13,872 2026-07-20 07:19:37
183.177.90.0/23 13,866 2026-07-20 07:19:37
200.152.173.0/24 13,742 2026-07-20 07:18:47
115.178.4.0/23 13,741 2026-07-20 07:19:33
115.178.3.0/24 13,726 2026-07-20 07:19:33
200.152.160.0/21 13,713 2026-07-20 07:18:47
124.108.80.0/22 13,709 2026-07-20 07:19:37
124.108.84.0/23 13,702 2026-07-20 07:19:33
124.108.78.0/23 13,667 2026-07-20 07:19:37
124.108.64.0/21 13,666 2026-07-20 07:19:33
200.152.172.0/22 13,621 2026-07-20 07:18:47
115.178.12.0/22 13,613 2026-07-20 07:19:37
27.123.33.0/24 13,597 2026-07-20 07:19:37
115.178.10.0/23 13,582 2026-07-20 07:19:37
103.40.110.0/23 13,488 2026-07-20 07:19:33
27.123.192.0/23 13,369 2026-07-20 07:19:36
27.123.196.0/23 13,316 2026-07-20 07:19:33
209.191.80.0/21 13,256 2026-07-20 07:18:47
27.123.44.0/22 13,208 2026-07-20 07:19:33
77.238.189.0/24 10,210 2026-07-20 05:49:38
200.152.160.0/24 9,100 2026-07-20 07:18:47
183.177.68.0/24 7,870 2026-07-20 07:02:38
200.152.161.0/24 7,842 2026-07-20 07:18:47
212.82.116.0/24 7,228 2026-07-20 05:23:06

Showing top 50 of 89 announced prefixes by sample volume.

Frequently Asked Questions

What is AS10310?

AS10310 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 AS10310 announce?

AS10310 announces 78.8K IPv4 addresses distributed across 82 routed CIDR prefixes. The network is registered in United States.

Who operates AS10310?

AS10310 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 AS10310 registered in?

AS10310 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-20 07:25:32 UTC
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