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Autonomous System

AS31655

Gamma Telecom Holdings Ltd

Announced IPs
609,536
CIDR prefixes
29
ASN
AS31655

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.

70/100
Moderate
How this score is built

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

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 500-1000Gbps
Geographic scope Regional
Traffic ratio Mostly Inbound
Peering policy Open
IRR record AS-GAMMATELECOM

Present at 4 internet exchanges: LINX LON2, LINX LON1: Main, LINX Manchester, LONAP: LON0

AS31655 — global IP footprint

Cities where AS31655 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
51.52.0.0/16 65.5K
0.8%
Gamma Telecom Holdings Ltd GB England Woolwich
51.219.0.0/16 65.5K
0.6%
Gamma Telecom Holdings Ltd GB England Shaftesbury
79.74.0.0/16 65.5K
0.0%
Gamma Telecom Holdings Ltd GB England Huddersfield
92.207.0.0/16 65.5K
0.8%
Gamma Telecom Holdings Ltd GB England Wandsworth
157.125.0.0/16 65.5K
0.1%
Gamma Telecom Holdings Ltd GB England Sydenham
157.231.0.0/16 65.5K
0.4%
Gamma Telecom Holdings Ltd GB England Richmond
62.223.128.0/17 32.8K
0.0%
Gamma Telecom Holdings Ltd GB England Birmingham
138.248.128.0/17 32.8K
0.4%
Gamma Telecom Holdings Ltd GB England St Albans
151.2.128.0/17 32.8K
0.0%
Gamma Telecom Holdings Ltd GB England Camden
164.39.128.0/17 32.8K
1.8%
Gamma Telecom Holdings Ltd GB England City of Westminster
88.215.0.0/18 16.4K
2.5%
Gamma Telecom Holdings Ltd GB England Borehamwood
188.66.64.0/18 16.4K
3.8%
Gamma Telecom Holdings Ltd GB England Nuneaton
5.2.96.0/19 8.2K
2.4%
Gamma Telecom Holdings Ltd GB England Markyate
195.162.96.0/19 8.2K
1.5%
Gamma Telecom Holdings Ltd GB England Islington
80.252.64.0/20 4.1K
2.2%
Gamma Telecom Holdings Ltd GB England Cannock
89.213.16.0/20 4.1K
2.6%
Gamma Telecom Holdings Ltd GB England Barnet
138.248.16.0/20 4.1K
0.5%
Gamma Telecom Holdings Ltd GB
138.248.32.0/20 4.1K
0.0%
Gamma Telecom Holdings Ltd GB
193.39.16.0/20 4.1K
0.0%
Gamma Telecom Holdings Ltd GB England Wood Green
213.218.192.0/20 4.1K
0.5%
Gamma Telecom Holdings Ltd GB England Fulham
46.227.48.0/21 2.0K
2.8%
Gamma Telecom Holdings Ltd GB England Warwick
89.213.8.0/21 2.0K
4.8%
Gamma Telecom Holdings Ltd GB England Radlett
89.213.32.0/21 2.0K
1.8%
Gamma Telecom Holdings Ltd GB England Borehamwood
5.144.156.0/22 1.0K
0.0%
Gamma Telecom Holdings Ltd GB England Chippenham
185.4.196.0/22 1.0K
0.1%
Gamma Telecom Holdings Ltd GB England Radlett
185.9.232.0/22 1.0K
0.7%
Gamma Telecom Holdings Ltd GB England Liverpool
185.21.208.0/22 1.0K
1.5%
Gamma Telecom Holdings Ltd GB England Evesham
185.47.104.0/22 1.0K
1.5%
Gamma Telecom Holdings Ltd GB England Southall
185.157.103.0/24 256
0.0%
Gamma Telecom Holdings Ltd DE

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS31655 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
185.157.103.0/24 3,813 2026-07-19 13:34:40
62.223.251.0/24 3,661 2026-07-19 13:06:26
5.2.96.0/19 3,466 2026-07-19 13:35:03
5.144.156.0/22 3,442 2026-07-19 13:35:08
62.223.128.0/17 3,291 2026-07-19 13:35:10
46.227.48.0/21 3,270 2026-07-19 13:35:02
80.252.64.0/20 3,262 2026-07-19 13:34:45
89.213.8.0/21 3,258 2026-07-19 13:34:30
89.213.16.0/20 3,255 2026-07-19 13:35:12
89.213.32.0/21 3,253 2026-07-19 13:34:42
79.74.0.0/16 3,251 2026-07-19 13:34:33
88.215.0.0/18 3,242 2026-07-19 13:35:06
185.9.232.0/22 3,240 2026-07-19 13:34:28
185.4.196.0/22 3,231 2026-07-19 13:34:38
151.2.128.0/17 3,229 2026-07-19 13:35:25
185.47.104.0/22 3,222 2026-07-19 13:34:28
188.66.64.0/18 3,210 2026-07-19 13:34:43
92.207.0.0/16 3,201 2026-07-19 13:34:29
185.21.208.0/22 3,200 2026-07-19 13:34:38
195.162.96.0/19 3,200 2026-07-19 13:35:17
213.218.192.0/20 3,188 2026-07-19 13:35:02
51.219.0.0/16 3,162 2026-07-19 13:34:26
51.52.0.0/16 3,142 2026-07-19 13:35:23
151.2.128.0/22 3,136 2026-07-19 13:35:15
151.2.140.0/22 3,131 2026-07-19 13:34:38
151.2.136.0/22 3,131 2026-07-19 13:35:00
151.2.132.0/22 3,130 2026-07-19 13:34:52
138.248.128.0/17 3,106 2026-07-19 13:34:48
138.248.32.0/20 3,104 2026-07-19 13:34:25
157.125.0.0/16 3,103 2026-07-19 13:34:43
138.248.16.0/20 3,101 2026-07-19 13:35:03
164.39.128.0/17 3,099 2026-07-19 13:35:10
157.231.0.0/16 3,090 2026-07-19 13:35:07
193.39.16.0/20 3,058 2026-07-19 13:35:11
51.52.50.0/24 2,847 2026-07-19 13:34:41
138.248.140.0/24 2,796 2026-07-19 13:35:23

Frequently Asked Questions

What is AS31655?

AS31655 is an Autonomous System Number assigned to Gamma Telecom Holdings Ltd. 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 AS31655 announce?

AS31655 announces 609.5K IPv4 addresses distributed across 29 routed CIDR prefixes. The network is registered in United Kingdom.

Who operates AS31655?

AS31655 is operated by Gamma Telecom Holdings Ltd. The organization is based in United Kingdom. You can view all IP ranges and related ASNs on the organization page.

What country is AS31655 registered in?

AS31655 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: 2026-07-19 13:40:32 UTC
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