Data as of Nov 8, 2026
192.42.121.0/24
No anonymizer space · no proxy exits in 30 daysSurf B.V.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | RPKI |
|---|---|---|---|
| 192.42.120.0/22 since Jul 2024 | AS1103 | Business |
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 |
|---|---|---|---|---|---|---|
| 192. | 1,792 | SURFnet | Surf B.V. (ORG-SB3-RIPE) · NL | LEGACY | Feb 18, 2005 | cert@ |
| └ 192.42.121.0/24 | 256 | SURFwim | SURFnet bv | LEGACY | — | cert@ via SURFnet |
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
IPv4 market
Holder
- Organization
- Surf B.V.
- Handle
- ORG-SB3-RIPE
- Range
- 192.
42. 116. 0 - 192. 42. 122. 255 - Registration type
- LEGACY
- Record created
- Feb 18, 2005
- Legacy
- yes
Origin network
AS1102
NL
- Name
- Surf B.V.
- Type
- Education
- Registered
- Sep 1, 1993
- Domain
- as1102.net
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Dec 2014
- Current origin since
- Nov 2025 · 12 mo
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 192.
42. 121. 0/ 24 - Netname
- SURFwim
- Registrant
- SURFnet bv
- Registrant country
- NL
- Organization
- SURFnet bv
- Org country
- NL
- Type
- LEGACY
- Created
- Not stated by the registry
- Updated
- Dec 4, 2019
- Maintainer
- SN-LIR-MNT
- RIR
- RIPE NCC
- Country
- NL
- Delegated
- Sep 26, 1988
- Status
- assigned
Report abuse
Abuse contact
- cert@
surfcert. nl - Name
- SURF Network Maintainer
- Handle
- SNS1-RIPE