AS42307 — SMHI-AS

AS42307 announces 2 IPv4 prefixes covering 2,048 addresses and 2 IPv6 prefixes.

About this network

The AS handle SMHI-AS is held by Sveriges Meteorologiska och Hydrologiska Institut.

What it's used for

• The address space carries internal agency infrastructure, evidenced by the netnames SMHI-NET and SE-SMHI-20180518 and the reverse DNS record baltrad-viewer-tst.smhi.se.
• The inventory consists of 2048 IPv4 addresses across 2 prefixes and 2 IPv6 prefixes, with only 2 observed neighbours, indicating a small, self-contained internal network rather than a transit or access provider.
• Traffic from this AS consists of government agency operations, specifically meteorological and hydrological monitoring, data archiving, and public information services.

Notable

• The registrants for both announced IPv4 prefixes are consistent with the AS holder, listing Sveriges Meteorologiska och Hydrologiska Institut and the SMHI Network Team.
• The address inventory is compact and finely subdivided into two /22 blocks, reflecting an internal corporate estate structure typical of a single government agency.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 91.192.28.0/22
• 194.55.248.0/22
• 2001:67c:274::/48
• 2a0c:ccc0::/29

Upstream networks

• AS1257 Tele2 Sverige AB
• AS1653 Vetenskapsradet / SUNET

Adjacent networks

• AS1257 Tele2 Sverige AB
• AS1653 Vetenskapsradet / SUNET

Routing security

• RPKI: 4 valid, 0 invalid and 0 not-found announcements; 4 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 5 route objects.
• Listed in as-sets: AS-SUNET, AS-TELE2-SE.