Autonomous system
AS15991 Swedish_Tax_Agency Swedish Tax Agency
Unclassified APNIC
Summary
Swedish Tax Agency
government infrastructure business
A tax authority holding a whole /16, with its department and street address in the AS handle.
What it's used for
- A national tax authority's network. One IPv4
/16and one IPv6/32announced from Sweden, sixty-five thousand five hundred and thirty-six addresses, across two observed BGP neighbours.
Notable
- The AS handle is the agency's name in capitals with underscores, then its department, a street, a postcode, a town and a country. Most of the field is a postal address.
- The netname is a five-letter contraction of the agency's name in the local language, followed by a hyphen and a single digit, as if it were the third of a series.
- The registrants are the agency and an abuse contact, and nothing else.
- Two upstreams for sixty-five thousand addresses.
- Three addresses were queried for reverse DNS and one returned a name: the four octets hyphenated, a label marking the address as fixed, and the agency's own domain.
Interesting
- A
/16is an enormous allocation by modern standards, and tax authorities were exactly the kind of organisation that could justify one when address space was assigned on a stated plan rather than demonstrated use. Nothing has forced it to give the space back. - Two upstreams is a modest shape for an agency this size, and it is the whole story visible from outside: everything else about how a tax authority connects is arranged privately.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-04, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 65.54K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SE | Sweden | 2 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS15991- Registry name
- Swedish_Tax_Agency
- Registrant
- Swedish Tax Agency
- Abuse contact
- abuse@skatteverket.se
- Registered
- 1970-01-01
- Last changed
- 2025-03-21
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 2 valid, 0 with no ROA
- ROAs
- 2 authorising AS15991
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 2 naming AS15991
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 452 networks and 1,853 prefixes, as published 2026-11-05. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere