Data as of Nov 6, 2026
31.25.220.0/23
No anonymizer space · no proxy exits in 30 daysNorsk Helsenett SF
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 |
|---|---|---|---|---|---|---|
| 31.25.216.0/21 | 2,048 | NO-NHN-20110309 | Norsk Helsenett SF (ORG-NHA3-RIPE) · NO | ALLOCATED PA | Mar 9, 2011 | abuse@ |
| └ 31.25.220.0/23 | 512 | NORWEGIAN-HEALTH-NETWORK | NHN Core Infrastructure Block 2 | ASSIGNED PA | Apr 11, 2014 | abuse@ via NO-NHN-20110309 |
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
Announced by
Covering announcement 31.25.216.0/21
- Prefix
- 31.25.216.0/21
- Announced by
- AS56828 Norsk Helsenett SF
- Type
- Business
- RPKI
- RPKI valid
- Netname
- NO-NHN-20110309
- Registrant
- Norsk Helsenett SF
- RIR
- RIPE NCC
Origin network
AS56828
NO
- Name
- Norsk Helsenett SF
- Type
- Education
- Registered
- May 23, 2011
- Domain
- nhn.no
- Website
- www.nhn.no
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 31.25.216.0/21
31.25.216.0/21
Routing history
- Pattern
- Stable
- First seen
- Sep 2013
- Current origin since
- Sep 2013 · 13 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 31.25.216.0/21 | AS56828 | /21 | RIPE | RPKI valid |
IRR
Route objects on 31.25.216.0/21
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS56828 | RIPE | Norsk Helsenett A/S | MNT-NHN | Aug 21, 2013 |
Whois
Registration for this announcement
- Range
- 31.
25. 216. 0/ 21 - Netname
- NO-NHN-20110309
- Registrant
- Norsk Helsenett SF
- Registrant country
- NO
- Organization
- Norsk Helsenett SF (ORG-NHA3-RIPE)
- Org country
- NO
- Type
- ALLOCATED PA
- Created
- Mar 9, 2011
- Updated
- Sep 2, 2016
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- NO
- Delegated
- Mar 9, 2011
- Status
- assigned
Report abuse
Abuse contact
- abuse@
nhn. no - Name
- Norsk Helsenett SF, Network Operations
- Handle
- NHN-RIPE