Data as of Nov 7, 2026
145.124.0.0/15
No anonymizer spaceSurf B.V.
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 145.120.0.0/13 | 524,288 | SURFNET-EARLY-REGISTRATIONS | Surf B.V. (ORG-SB3-RIPE) · NL | LEGACY | Nov 24, 2025 | cert@ |
| └ 145.124.0.0/16 | 65,536 | ASTRON-NET | ASTRON | LEGACY | Sep 9, 2003 | cert@ via SURFNET-EARLY-REGISTRATIONS |
| └ 145.125.0.0/16 | 65,536 | SURFNET-TEST-NETWORK | SURFnet test network | LEGACY | Jun 4, 2002 | cert@ via SURFNET-EARLY-REGISTRATIONS |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Origin network
AS1103
NL
- Name
- Surf B.V.
- Type
- Education
- Registered
- Sep 1, 1993
- Domain
- surf.nl
- Website
- www.surf.nl/en
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Apr 2012
- Current origin since
- Apr 2012 · 15 yr
- Origin networks
- 2
- Last change of origin
- Jun 2019
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 145.124.0.0/15 | AS1103 | /24 | RIPE | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS1103 | RIPE | 145.124.0.0/15 aggregate | AS1103-MNT | Mar 21, 2019 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 145.125.0.0/16 | AS1125 | RIPE | SURFNET Test Network | AS1103-MNT | Apr 7, 2009 |
Whois
Registration for this announcement
- Range
- 145.
120. 0. 0/ 13 - Netname
- SURFNET-EARLY-REGISTRATIONS
- Registrant
- Surf B.V.
- Registrant country
- NL
- Organization
- Surf B.V. (ORG-SB3-RIPE)
- Org country
- NL
- Type
- LEGACY
- Created
- Nov 24, 2025
- Updated
- May 26, 2026
- 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