AS50490 — EM-Fiberbredbaand-AS Sinal A/S

AS50490 announces 2 IPv4 prefixes covering 1,536 addresses and 1 IPv6 prefixes.

About this network

The AS handle EM-FIBERBREDBAAND-AS is held by Sinal A/S.

What it's used for

• The address space carries residential fiber broadband traffic, evidenced by reverse DNS entries such as 178-21-93-0.norlyscustomer.net and 178-21-90-128.norlyscustomer.net.
• The network announces 1536 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, with only 1 observed neighbour, indicating a local access network rather than a transit provider.
• Traffic consists of subscriber eyeballs for fiber-to-the-home services in the Danish region.

Notable

• Registrants for both announced prefixes are listed as Sinal A/S, matching the AS holder.
• The address inventory is compact, consisting of two contiguous IPv4 blocks within the 178.21.0.0/16 range.

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

Announced prefixes

• 178.21.90.0/23
• 178.21.92.0/22
• 2a00:1f9f::/32

Upstream networks

• AS39642 Sinal A/S

Adjacent networks

• AS39642 Sinal A/S

Routing security

• RPKI: 3 valid, 0 invalid and 0 not-found announcements; 3 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 4 route objects.
• Listed in as-sets: AS-HURRICANEV6, AS31027:AS-GCNET-LEGACY, AS31027:AS-NIANET.