AS19399 — SLL Region Stockholm

AS19399 announces 14 IPv4 prefixes covering 203,008 addresses and 1 IPv6 prefixes.

About this network

SLL Region Stockholm is operated by Region Stockholm, the regional government authority for the Stockholm region in Sweden.

What it's used for

• The address space carries internal corporate and public sector infrastructure, evidenced by netnames such as SLL, SLLLAN-NET1, and SLLLAN-NET2 registered to Region Stockholm.
• The AS announces 203,008 IPv4 addresses across 14 prefixes and 1 IPv6 prefix, with 16 observed neighbours. This ratio of a large, finely subdivided address inventory against a moderate number of peering partners indicates an internal corporate estate with site-by-site segmentation rather than a transit or access network.

Notable

• Registrants largely align with the announcer, with most prefixes registered to "Region stockholm" or "Region Stockholm"; one prefix (192.36.202.0/23) is registered to Resilans AB under the netname SE-RESILANS-20000317.
• The address inventory consists of three large /16 blocks and numerous smaller /23 and /24 blocks, reflecting a structured internal network design typical of a large public sector organization.

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

Announced prefixes

• 136.155.0.0/16
• 147.180.0.0/16
• 159.38.0.0/16
• 192.36.201.0/24
• 192.36.202.0/23
• 192.44.240.0/21
• 192.44.248.0/22
• 192.71.123.0/24
• 192.121.69.0/24
• 193.182.239.0/24
• 193.182.247.0/24
• 194.1.186.0/23
• 194.4.8.0/23
• 194.14.182.0/23
• 2a00:f060::/32

Upstream networks

• AS6939 Hurricane Electric LLC
• AS8473 Bahnhof AB
• AS24482 SG.GS
• AS50304 Blix Solutions AS
• AS3303 Swisscom (Schweiz) AG
• AS20473 The Constant Company, LLC

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS8473 Bahnhof AB
• AS24482 SG.GS
• AS50304 Blix Solutions AS
• AS3303 Swisscom (Schweiz) AG
• AS20473 The Constant Company, LLC

Internet exchanges

• Netnod Sundsvall- Gävle — Sundsvall, Sweden