Data as of Nov 5, 2026
145.220.91.16/29
No anonymizer space · no proxy exits in 30 daysSurf B.V.
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 145.220.0.0/16 | 65,536 | NETSURF-NET | Surf B.V. (ORG-SB3-RIPE) · NL | LEGACY | — | cert@ |
| └ 145.220.91.16/29 | 8 | hadrian | unknown | LEGACY | Nov 5, 2025 | cert@ via NETSURF-NET |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
8 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 7 | 88% | 2 | |
| Hosting | 1 | 13% | 1 |
Network & registry
Announced by
Covering announcement 145.220.0.0/16
- Prefix
- 145.220.0.0/16
- Announced by
- AS1101 Surf B.V.
- Type
- Business
- RPKI
- RPKI valid
- Netname
- NETSURF-NET
- Registrant
- Surf B.V.
- RIR
- RIPE NCC
Origin network
AS1101
NL
- Name
- Surf B.V.
- Type
- Education
- Registered
- Sep 1, 1993
- Domain
- as1101.net
- Website
- as1101.net/
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 145.220.0.0/16
145.220.0.0/16
Routing history
- Pattern
- Stable
- First seen
- Jul 2007
- Current origin since
- Jul 2007 · 19 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 145.220.0.0/16 | AS1101 | /16 | RIPE | RPKI valid |
IRR
Route objects on 145.220.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS1101 | RIPE | SURFnet CIDR Block III d | SN-LIR-MNT | Jun 28, 2007 |
Whois
Registration for this announcement
- Range
- 145.
220. 0. 0/ 16 - Netname
- NETSURF-NET
- Registrant
- Surf B.V.
- Registrant country
- NL
- Organization
- Surf B.V. (ORG-SB3-RIPE)
- Org country
- NL
- Type
- LEGACY
- Created
- Not stated by the registry
- Updated
- Oct 2, 2025
- Maintainer
- RIPE-NCC-LEGACY-MNT
- RIR
- RIPE NCC
- Country
- NL
- Delegated
- Sep 1, 1993
- Status
- assigned
Report abuse
Abuse contact
- cert@
surfcert. nl - Name
- SURF Network Maintainer
- Handle
- SNS1-RIPE