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Autonomous System

AS35228

O2 UK

Announced IPs
201,216
CIDR prefixes
19
ASN
AS35228

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 AS35228 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 10:38:20

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 100-200Gbps
Geographic scope Europe
Traffic ratio Mostly Inbound
Peering policy Selective

Present at 2 internet exchanges: LINX LON1: Main, LINX LON2

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
87.194.0.0/16 65.5K
93.3%
O2 UK GB
93.97.0.0/16 65.5K
82.0%
O2 UK GB England Fulham
158.230.0.0/17 32.8K
0.2%
O2 UK GB
46.233.64.0/18 16.4K
0.1%
O2 UK GB England Wandsworth
82.132.160.0/20 4.1K
67.0%
O2 UK GB England Tipton
82.132.224.0/20 4.1K
96.1%
O2 UK GB England Lambeth
82.132.176.0/21 2.0K
12.8%
O2 UK GB England Thornton Heath
82.132.216.0/21 2.0K
96.9%
O2 UK GB Scotland Glasgow
82.132.240.0/21 2.0K
73.1%
O2 UK GB England Birmingham
82.132.184.0/22 1.0K
0.0%
O2 UK GB England Bolton
82.132.212.0/22 1.0K
97.3%
O2 UK GB England Brent
158.230.200.0/22 1.0K
0.5%
O2 UK GB
185.79.104.0/22 1.0K
0.0%
O2 UK GB
82.132.138.0/23 512
13.3%
O2 UK GB
82.132.198.0/23 512
42.6%
O2 UK GB
82.132.210.0/23 512
0.0%
O2 UK GB
82.132.248.0/23 512
0.0%
O2 UK GB
82.132.253.0/24 256
9.0%
O2 UK GB
185.132.84.0/24 256
0.0%
O2 UK GB

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS35228 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
87.194.1.0/24 9,040 2026-07-22 10:31:56
87.194.24.0/24 9,012 2026-07-22 10:31:53
87.194.116.0/24 8,987 2026-07-22 10:31:44
82.132.210.0/23 8,968 2026-07-22 10:31:46
82.132.248.0/23 8,948 2026-07-22 10:31:49
93.97.80.0/23 8,929 2026-07-22 10:31:43
82.132.138.0/23 8,896 2026-07-22 10:31:29
87.194.115.0/24 8,889 2026-07-22 10:31:44
82.132.199.0/24 8,885 2026-07-22 10:31:44
87.194.118.0/24 8,883 2026-07-22 10:31:44
87.194.117.0/24 8,875 2026-07-22 10:31:44
82.132.198.0/23 8,875 2026-07-22 10:31:58
87.194.108.0/23 8,858 2026-07-22 10:31:41
82.132.176.0/23 7,829 2026-07-22 10:31:43
82.132.220.0/22 7,803 2026-07-22 10:31:28
93.97.70.0/23 7,484 2026-07-22 10:31:48
158.230.0.0/17 7,316 2026-07-22 10:31:27
87.194.23.0/24 7,207 2026-07-22 10:31:53
93.97.52.0/22 7,012 2026-07-22 10:34:01
93.97.220.0/22 6,994 2026-07-22 10:34:01
93.97.216.0/22 6,965 2026-07-22 10:34:01
93.97.56.0/22 6,961 2026-07-22 10:34:01
93.97.224.0/23 6,959 2026-07-22 10:34:01
46.233.88.0/23 6,959 2026-07-22 10:31:44
158.230.200.0/22 6,924 2026-07-22 10:33:02
87.194.218.0/23 6,914 2026-07-22 10:34:18
93.97.176.0/22 6,910 2026-07-22 10:34:01
93.97.208.0/22 6,889 2026-07-22 10:34:01
93.97.212.0/22 6,884 2026-07-22 10:34:01
93.97.180.0/22 6,877 2026-07-22 10:34:01
87.194.220.0/23 6,870 2026-07-22 10:34:01
93.97.132.0/22 6,861 2026-07-22 10:34:01
93.97.204.0/22 6,861 2026-07-22 10:34:01
93.97.200.0/22 6,860 2026-07-22 10:34:01
87.194.100.0/22 6,851 2026-07-22 10:31:27
93.97.172.0/22 6,848 2026-07-22 10:34:01
93.97.170.0/23 6,844 2026-07-22 10:34:01
93.97.48.0/22 6,831 2026-07-22 10:34:01
87.194.216.0/23 6,824 2026-07-22 10:34:01
93.97.192.0/22 6,816 2026-07-22 10:34:01
46.233.82.0/23 6,815 2026-07-22 10:31:44
93.97.16.0/22 6,801 2026-07-22 10:34:01
93.97.32.0/22 6,757 2026-07-22 10:34:01
93.97.196.0/22 6,756 2026-07-22 10:34:01
93.97.8.0/22 6,753 2026-07-22 10:34:01
93.97.128.0/22 6,734 2026-07-22 10:34:01
93.97.0.0/22 6,728 2026-07-22 10:34:01
93.97.12.0/22 6,722 2026-07-22 10:34:01
82.132.212.0/22 6,699 2026-07-22 10:31:20
93.97.4.0/22 6,689 2026-07-22 10:34:01

Showing top 50 of 109 announced prefixes by sample volume.

Frequently Asked Questions

What is AS35228?

AS35228 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 AS35228 announce?

AS35228 announces 201.2K IPv4 addresses distributed across 19 routed CIDR prefixes. The network is registered in United Kingdom.

Who operates AS35228?

AS35228 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 AS35228 registered in?

AS35228 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: 2026-07-22 10:40:31 UTC
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