$ query “AS15404” --type=asn → 1 result(s)

AS15404 — COLT-TECHNOLOGY-SERVICES

COLT Technology Services Group Limited

AS15404 is an enterprise stub network run by COLT Technology Services Group Limited, established in the United Kingdom. The network announces a solid 144 384 IPv4 addresses, including a /16. Supports IPv6.

Basic Information

Country
🇬🇧 United Kingdom
Category
Business
Network Role
Stub Network
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
March 04, 2026
Last Seen
March 05, 2026

Prefix Summary

IPv4 Prefixes (raw / aggregated)
152 / 122
IPv6 Prefixes (raw / aggregated)
12 / 12
IPv4 Addresses
144 384
Largest IPv4 Prefix
/16 (65 536 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇬🇧 GB (20 IPs), 🇩🇪 DE (55 IPs), 🇮🇹 IT (9 IPs), 🇺🇸 US, 🇨🇭 CH, 🇫🇷 FR, 🇳🇱 NL, 🇦🇺 AU, 🇯🇵 JP, 🇩🇰 DK, 🇮🇪 IE, 🇪🇸 ES, 🇵🇹 PT, 🇧🇪 BE and 1 more
Prefix Changed
March 04, 2026

Reputation

Reputation
Pristine — 0 flagged IPs out of 144 384 total (0.00%)

Connectivity Summary

Upstream Providers
1 upstream autonomous systems providing transit
Peers
0 autonomous systems exchanging traffic without transit fees
Downstream Customers
0 downstream autonomous systems buying transit
Degree
2 unique BGP neighbors (providers + customers + peers)
Reach
0 — customer cone size measuring network influence
Degree Rank
#31 096

Upstream Providers (1)

Prefix Lists

IPv4 Prefixes (152 total)

  • 161.17.0.0/16 (65 536 addresses)
  • 62.85.160.0/19 (8 192 addresses)
  • 194.59.96.0/19 (8 192 addresses)
  • 5.11.96.0/20 (4 096 addresses)
  • 148.188.0.0/20 (4 096 addresses)
  • 148.188.192.0/20 (4 096 addresses)
  • 193.29.144.0/20 (4 096 addresses)
  • 148.188.232.0/21 (2 048 addresses)
  • 178.249.200.0/21 (2 048 addresses)
  • 193.26.248.0/21 (2 048 addresses)
  • 194.99.120.0/21 (2 048 addresses)
  • 148.188.224.0/22 (1 024 addresses)
  • 155.137.0.0/22 (1 024 addresses)
  • 185.212.156.0/22 (1 024 addresses)
  • 185.218.120.0/22 (1 024 addresses)
  • 193.8.64.0/22 (1 024 addresses)
  • 193.176.112.0/22 (1 024 addresses)
  • 194.15.244.0/22 (1 024 addresses)
  • 77.74.158.0/23 (512 addresses)
  • 103.80.220.0/23 (512 addresses)
  • 129.35.20.0/23 (512 addresses)
  • 157.239.128.0/23 (512 addresses)
  • 170.200.252.0/23 (512 addresses)
  • 170.252.84.0/23 (512 addresses)
  • 185.60.76.0/23 (512 addresses)
  • 185.154.148.0/23 (512 addresses)
  • 185.213.216.0/23 (512 addresses)
  • 188.64.18.0/23 (512 addresses)
  • 192.228.2.0/23 (512 addresses)
  • 193.26.246.0/23 (512 addresses)
  • 193.177.180.0/23 (512 addresses)
  • 194.15.242.0/23 (512 addresses)
  • 194.76.8.0/23 (512 addresses)
  • 202.252.108.0/23 (512 addresses)
  • 5.182.152.0/24 (256 addresses)
  • 45.129.69.0/24 (256 addresses)
  • 46.28.212.0/24 (256 addresses)
  • 62.182.250.0/24 (256 addresses)
  • 85.208.193.0/24 (256 addresses)
  • 91.209.87.0/24 (256 addresses)
  • 91.212.245.0/24 (256 addresses)
  • 91.213.65.0/24 (256 addresses)
  • 91.213.68.0/24 (256 addresses)
  • 91.213.91.0/24 (256 addresses)
  • 91.213.110.0/24 (256 addresses)
  • 91.238.4.0/24 (256 addresses)
  • 91.244.125.0/24 (256 addresses)
  • 109.107.145.0/24 (256 addresses)
  • 129.35.17.0/24 (256 addresses)
  • 129.35.85.0/24 (256 addresses)

IPv6 Prefixes (12 total)

  • 2a07:cb81::/32
  • 2a10:8802::/36
  • 2001:678:274::/48
  • 2001:67c:67c::/48
  • 2001:67c:2b20::/48
  • 2001:67c:2ea0::/48
  • 2a02:11f8:70::/48
  • 2a06:6540:1001::/48
  • 2a06:6541:1001::/48
  • 2a0a:d6c0:145::/48
  • 2a0e:900:d001::/48
  • 2a11:4d40::/48