Data as of Nov 14, 2026
57.
- Proxy activity
- Not seen in 30 days
- Type
- Business
- Risk
- 0 / 100 · Low
- Announced by
- AS8220COLT Technology Services Group LimitedInternet provider
- Announcement
- 57.133.0.0/16RPKI valid
- Company
- NET-IT-GTN-CMC-Holding-BV
- Location
- Milan, Lombardy, Italy
Network & registry
Announced by
Announcement
- Prefix
- 57.133.0.0/16
- Announced by
- AS8220 COLT Technology Services Group Limited
- Type
- Internet provider
- Proxy exits
- 38
- RPKI
- RPKI valid
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 address
- 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
- Sub-assignment
- 57.
133. 28. 72/ 32 - RIR
- RIPE NCC
- Country
- GB
- Delegated
- Jun 21, 1993
- Status
- assigned
Report abuse
Abuse contact
- abuse@
colt. net - Name
- COLT Hostmaster
- Handle
- CHM4-RIPE