AS31655 — ASN-GAMMATELECOM
AS31655 announces 29 IPv4 prefixes covering 609,536 addresses and 3 IPv6 prefixes.
About this network
ASN-GammaTelecom is operated by Gamma Telecom Holdings Ltd.
What it's used for
- The address space carries business and enterprise connectivity, evidenced by netnames such as UK-GTL, GAMMA-2, and GTL registered to Gamma Telecom entities.
- With 609,536 IPv4 addresses announced across 52 prefixes and 36 observed neighbours, the ratio suggests a significant access or regional ISP role rather than pure transit.
Notable
- Registrants consistently align with the announcer, listing Gamma Telecom Limited and Gamma Telecom Holdings Ltd across the sampled prefixes.
- The company was established in 2001 to acquire assets from distressed telecommunications businesses, including Atlantic Telecom, and has since operated as a UK-based telecom provider.
- The inventory includes a mix of /16, /17, and /18 blocks, indicating a large and diverse address estate managed for various service tiers.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 5.2.96.0/19
- 5.144.156.0/22
- 46.227.48.0/21
- 51.52.0.0/16
- 51.219.0.0/16
- 62.223.128.0/17
- 79.74.0.0/16
- 80.252.64.0/20
- 88.215.0.0/18
- 89.213.8.0/21
- 89.213.16.0/20
- 89.213.32.0/21
- 92.207.0.0/16
- 138.248.16.0/20
- 138.248.32.0/20
- 138.248.128.0/17
- 151.2.128.0/17
- 157.125.0.0/16
- 157.231.0.0/16
- 164.39.128.0/17
- 185.4.196.0/22
- 185.9.232.0/22
- 185.21.208.0/22
- 185.47.104.0/22
- 185.157.103.0/24
- 188.66.64.0/18
- 193.39.16.0/20
- 195.162.96.0/19
- 213.218.192.0/20
- 2a02:c1c0::/29
- 2a02:df80::/29
- 2a04:4440::/29
Upstream networks
- AS3356 Level 3 Parent, LLC
- AS2914 NTT America, Inc.
- AS6939 Hurricane Electric LLC
- AS33891 Core-Backbone GmbH
- AS50300 CustodianDC Limited
- AS24482 SG.GS
- AS35280 F5 Networks SARL
- AS4637 Telstra Global
- AS13030 Init7 (Switzerland) Ltd.
Downstream networks
- AS204193 Gamma Telecom Holdings Ltd
- AS8918 Coolwave Communications Limited
- AS198472 Manchester City Council
- AS216167 Gamma Telecom Holdings Ltd
- AS41553 Reed Specialist Recruitment Limited
- AS205237 SAVILLS PLC
Adjacent networks
- AS3356 Level 3 Parent, LLC
- AS2914 NTT America, Inc.
- AS6939 Hurricane Electric LLC
- AS204193 Gamma Telecom Holdings Ltd
- AS8918 Coolwave Communications Limited
- AS198472 Manchester City Council
- AS216167 Gamma Telecom Holdings Ltd
- AS41553 Reed Specialist Recruitment Limited
- AS33891 Core-Backbone GmbH
- AS205237 SAVILLS PLC
- AS24482 SG.GS
- AS50300 CustodianDC Limited
- AS35280 F5 Networks SARL
- AS4637 Telstra Global
- AS13030 Init7 (Switzerland) Ltd.
Routing security
- RPKI: 27 valid, 0 invalid and 12 not-found announcements; 24 ROAs.
- ASPA: none published.
- IRR: 82% of announcements registered; 52 route objects.
- Listed in as-sets: AS-4D-DC-LINX, AS-4D-DC-LONAP, AS-GAMMATELECOM, AS-GLOBEINTERNET-CLIENTS, AS-GLOBEINTERNET-CLIENTS, AS-GTTCUST, AS-GTTCUST6, AS-LONAP-CONNECTED, AS-MANDA-LINX-PEERS-V4, AS-MANDA-LINX-PEERS-V6, AS-PKXG-EXPRESS, AS-PLUSNETUK:AS-LONAP-PEERS-PRI, AS-PLUSNETUK:AS-LONAP-PEERS-SEC, AS51202:AS-ALL.
Internet exchanges
- LINX LON1 — London, United Kingdom
- London Network Access Point — London, United Kingdom
- LINX Manchester — Manchester, United Kingdom
BGP / ASN / CIDR
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IPv4
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Search Results
IPv4 Prefixes
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IPv6 Prefixes
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Total Prefixes
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Unique /24s
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⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED