AS210958 — FASTPORT Fastport a.s.

AS210958 announces 2 IPv4 prefixes covering 4,096 addresses and 1 IPv6 prefixes.

About this network

The AS handle FASTPORT is operated by Fastport a.s.

What it's used for

• The address space carries residential and business internet access, evidenced by reverse DNS records pointing to fastportnet.cz and netnames CZ-FASTPORT-20101217 and CZ-FASTPORT-20080513.
• The network announces 4096 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, with only 1 observed routing neighbour, indicating a local access provider rather than a transit hub.
• Traffic from this AS consists of subscriber eyeballs and local business endpoints within the Czech Republic, specifically in regions like Pardubice.

Notable

• Registrants for both announced prefixes are consistently listed as Fastport hostmasters and Fastport a.s., matching the AS holder.
• The address inventory is compact, consisting of two /21 blocks in the 46.254.64.0 and 93.190.56.0 ranges, typical for a regional ISP.

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

Announced prefixes

• 46.254.64.0/21
• 93.190.56.0/21
• 2a02:a28::/32

Upstream networks

• AS42306 CEZNET s.r.o.

Adjacent networks

• AS42306 CEZNET s.r.o.

Routing security

• RPKI: 3 valid, 0 invalid and 0 not-found announcements; 3 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 3 route objects.
• Listed in as-sets: AS-CEZ-ICT, AS-GTSCZ-CUST, AS39791:AS-TPS, AS42306:AS-EDERA.