$ query “AS12761” --type=asn → 1 result(s)
AS12761 — COLT-CORP-IT
COLT Technology Services Group Limited
AS12761 is an enterprise stub network operated by COLT Technology Services Group Limited, based in the United Kingdom since 2002. The network announces 1 536 IPv4 addresses. No IPv6 support — it's 2026, just saying.
Basic Information
- Country
- 🇬🇧 United Kingdom
- Category
- Business
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- January 22, 2002
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 6 / 3
- IPv6 Prefixes (raw / aggregated)
- 0 / 0
- IPv4 Addresses
- 1 536
- Largest IPv4 Prefix
- /22 (1 024 addresses)
- Geolocated Countries
- 🇬🇧 GB (2 IPs), 🇯🇵 JP (3 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 1 536 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
- 1 unique BGP neighbors (providers + customers + peers)
- Reach
- 0 — customer cone size measuring network influence
- Degree Rank
- #54 324
Upstream Providers (1)
- AS8220 — COLT
Prefix Lists
IPv4 Prefixes (6 total)
- 217.111.164.0/22 (1 024 addresses)
- 193.118.162.0/24 (256 addresses)
- 193.118.164.0/24 (256 addresses)