Data as of Nov 14, 2026
57.133.48.0/20
No anonymizer space · no proxy exits in 30 daysCOLT Technology Services Group Limited
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
4,096 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Internet provider | 3,216 | 79% | 21 | |
| Business | 880 | 21% | 67 |
Network & registry
Announced by
Covering announcement 57.133.0.0/16
- Prefix
- 57.133.0.0/16
- Announced by
- AS8220 COLT Technology Services Group Limited
- Type
- Internet provider
- Proxy exits
- 38
- RPKI
- RPKI valid
- Netname
- COLT-Transfer
- Registrant
- COLT Technology Services Group Limited
- RIR
- RIPE NCC
Origin network
AS8220
GB
- Name
- COLT Technology Services Group Limited
- Type
- Internet provider
- Registered
- Feb 24, 1997
- Domain
- colt.net
- Website
- www.colt.net
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 57.133.0.0/16
57.133.0.0/16
Routing history
- Pattern
- Stable
- First seen
- Feb 2022
- Current origin since
- Feb 2022 · 4.8 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 57.133.0.0/16 | AS8220 | /16 | RIPE | RPKI valid |
IRR
Route objects on 57.133.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS8220 | RIPE | COLT Technology Services | COLT-MNT | Feb 15, 2022 |
Whois
Registration for this announcement
- Range
- 57.
133. 0. 0/ 16 - Netname
- COLT-Transfer
- Registrant
- COLT Technology Services Group Limited
- Registrant country
- GB
- Organization
- COLT Technology Services Group Limited (ORG-CI9-RIPE)
- Org country
- GB
- Type
- LEGACY
- Created
- Jan 13, 2022
- Updated
- Nov 14, 2022
- Maintainer
- RIPE-NCC-LEGACY-MNT
- RIR
- RIPE NCC
- Country
- GB
- Delegated
- Jun 21, 1993
- Status
- assigned
Report abuse
Abuse contact
- abuse@
colt. net - Name
- COLT Hostmaster
- Handle
- CHM4-RIPE