All ASNs

Autonomous System details for AS31655

AS31655

Gamma Telecom Holdings Ltd • gamma.co.uk

AS31655 — Gamma Telecom Holdings Ltd

AS Name

ASN-GammaTelecom

Country

United Kingdom (GB)

Website

gamma.co.uk

Number of IPv4

614,400

Number of IPv6

1.9 × 10³⁰

ASN type

ISP

Status

Allocated

Registry

RIPE

Allocated

July 02, 2004

Last updated

December 02, 2025

IP Ranges

36 IPv4 prefixes, 3 IPv6 prefixes

Prefix	Company	Number of IPs
5.2.96.0/19	Gamma Telecom DSL Services	8,192
5.144.156.0/22	Carr's Group PLC sold by Gamma Business Communications Ltd	1,024
46.227.48.0/21	VARIDION	2,048
51.52.0.0/16	Gamma CES Infrastructure	65,536
51.52.50.0/24	Gamma Telecom Limited	256
51.219.0.0/16	Gamma Telecom Limited	65,536
62.223.128.0/17	Gamma Telecom Holdings Ltd	32,768
62.223.251.0/24	Gamma DSL	256
79.74.0.0/16	Gamma Telecom Limited	65,536
80.252.64.0/20	Gamma Telecom DSL Services	4,096
88.215.0.0/18	Gamma Telecom DSL Services	16,384
89.213.8.0/21	Gamma Telecom Holdings Ltd	2,048
89.213.16.0/20	Gamma Telecom Holdings Ltd	4,096
89.213.32.0/21	GAMMA DSL	2,048
92.207.0.0/16	Gamma Telecom Limited	65,536
138.248.16.0/20	Gamma Telecom Limited	4,096
138.248.32.0/20	Gamma Telecom Limited	4,096
138.248.128.0/17	Gamma Telecom Limited	32,768
138.248.140.0/24	Gamma Telecom Limited	256
151.2.128.0/17	Gamma Telecom Limited	32,768
151.2.128.0/22	Gamma Telecom Limited	1,024
151.2.132.0/22	Gamma Telecom Limited	1,024
151.2.136.0/22	Gamma Telecom Limited	1,024
151.2.140.0/22	Gamma Telecom Limited	1,024
157.125.0.0/16	Gamma Telecom Limited	65,536
157.231.0.0/16	Gamma Telecom Limited	65,536
164.39.128.0/17	Gamma DSL infrastructure	32,768
185.4.196.0/22	Gamma CES Infrastructure	1,024
185.9.232.0/22	Gamma Business Communications Limited	1,024
185.21.208.0/22	Gamma Telecom DSL Services	1,024
185.47.104.0/22	Gamma Network Solution Limited	1,024
185.157.103.0/24	ALDI International Services SE & Co. oHG	256
188.66.64.0/18	Gamma Telecom Holdings Ltd	16,384
193.39.16.0/20	The Guinness Partnership	4,096
195.162.96.0/19	Gamma Telecom Holdings Ltd	8,192
213.218.192.0/20	Gamma Telecom Holdings Ltd	4,096
2a02:c1c0::/29	Gamma Telecom Holdings Ltd	6.34 × 10²⁹
2a02:df80::/29	Gamma Business Communications Limited	6.34 × 10²⁹
2a04:4440::/29	Gamma Telecom Limited	6.34 × 10²⁹

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS31655

31 peers

AS1000 AS4455 AS4637 AS6908 AS6939 AS8220 AS8426 AS8943 AS8966 AS13030 AS18106 AS24482 AS24940 AS25160 AS28792 AS3170 AS5413 AS8455 AS14630 AS15692 AS32590 AS35266 AS51185 AS31742 AS35280 AS39351 AS41811 AS48070 AS49544 AS50300 AS61049

AS31655 peers with these other Autonomous Systems.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS31655

3 upstreams

AS2914 AS3356 AS215638

AS31655 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS31655 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS31655

6 downstreams

AS8918 AS41553 AS198472 AS204193 AS205237 AS216167

AS31655 provides internet connectivity to these downstream Autonomous Systems.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.