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Autonomous System

AS29180

O2 UK

Announced IPs
15,104
CIDR prefixes
13
ASN
AS29180

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.

57/100
Caution
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 1 MOAS prefix — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS29180 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
82.132.128.0/24 AS29180, AS35228 2026-07-22 23:23:24

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
82.132.144.0/20 4.1K
22.8%
O2 UK GB
82.132.128.0/21 2.0K
30.5%
O2 UK GB
82.132.200.0/21 2.0K
25.6%
O2 UK GB
82.132.140.0/22 1.0K
29.3%
O2 UK GB
82.132.188.0/22 1.0K
6.5%
O2 UK GB
82.132.192.0/22 1.0K
19.6%
O2 UK GB
82.132.252.0/22 1.0K
0.0%
O2 UK GB
185.238.16.0/22 1.0K
0.0%
O2 UK GB
82.132.136.0/23 512
15.8%
O2 UK GB
82.132.196.0/23 512
12.3%
O2 UK GB
82.132.208.0/23 512
11.5%
O2 UK GB
82.132.250.0/23 512
5.9%
O2 UK GB
82.132.254.0/23 512
25.8%
O2 UK GB
82.132.252.0/24 256
4.7%
O2 UK GB

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS29180 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
185.238.16.0/23 13,125 2026-07-23 17:20:44
185.238.18.0/23 13,019 2026-07-23 17:20:44
82.132.252.0/23 9,271 2026-07-23 17:19:52
82.132.140.0/23 9,040 2026-07-23 17:19:52
82.132.208.0/23 9,009 2026-07-23 17:19:52
82.132.200.0/23 8,989 2026-07-23 17:19:52
82.132.128.0/22 8,987 2026-07-23 17:19:52
82.132.192.0/23 8,982 2026-07-23 17:19:52
82.132.152.0/21 8,973 2026-07-23 17:19:52
82.132.196.0/23 8,969 2026-07-23 17:19:52
82.132.136.0/23 8,969 2026-07-23 17:19:52
82.132.204.0/23 8,965 2026-07-23 17:19:52
82.132.190.0/23 8,932 2026-07-23 17:19:52
82.132.188.0/23 8,884 2026-07-23 17:19:52
82.132.144.0/21 8,831 2026-07-23 17:19:52
82.132.250.0/23 8,409 2026-07-23 17:19:52
82.132.254.0/23 8,381 2026-07-23 17:19:52
82.132.202.0/23 8,342 2026-07-23 17:19:52
82.132.142.0/23 8,339 2026-07-23 17:19:52
82.132.132.0/22 8,338 2026-07-23 17:19:52
82.132.194.0/23 8,309 2026-07-23 17:19:52
82.132.206.0/23 8,296 2026-07-23 17:19:52
82.132.128.0/24 4,793 2026-07-22 01:29:35
82.132.203.0/24 1,574 2026-07-13 09:51:54
82.132.197.0/24 1,434 2026-07-13 09:50:29

Frequently Asked Questions

What is AS29180?

AS29180 is an Autonomous System Number assigned to O2 UK. 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 AS29180 announce?

AS29180 announces 15.1K IPv4 addresses distributed across 13 routed CIDR prefixes. The network is registered in United Kingdom.

Who operates AS29180?

AS29180 is operated by O2 UK. The organization is based in United Kingdom. You can view all IP ranges and related ASNs on the organization page.

What country is AS29180 registered in?

AS29180 is registered in United Kingdom. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-23 17:25:31 UTC
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