AS39906 — COPROSYS

AS39906 announces 27 IPv4 prefixes covering 33,792 addresses and 2 IPv6 prefixes.

About this network

COPROSYS is operated by CoProSys a.s., a Czech internet service provider.

What it's used for

• The address space carries residential and business internet access, evidenced by netnames such as CZ-COPROSYS-20061128 and CRFREENET-CZ, and a reverse DNS entry pointing to coprosys.cz.
• The AS announces 33,792 IPv4 addresses across 31 prefixes and 2 IPv6 prefixes, with only 2 observed routing neighbours, indicating a local access network rather than a transit provider.
• Traffic from this AS consists of subscriber eyeballs and local business endpoints served by CoProSys in the Czech Republic.

Notable

• Registrants for the majority of prefixes are CoProSys a.s., consistent with the AS holder; one prefix (93.170.84.0/22) is registered to ALFA TELECOM s.r.o. under the netname PLZEN-NETWORK.
• The address inventory is finely subdivided into multiple /20, /21, /22, and /24 blocks, reflecting site-by-site or regional segmentation of the ISP's estate.

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

Announced prefixes

• 5.59.34.0/24
• 77.104.192.0/23
• 77.104.195.0/24
• 77.104.196.0/22
• 77.104.200.0/21
• 77.104.208.0/23
• 77.104.211.0/24
• 77.104.212.0/22
• 77.104.217.0/24
• 77.104.218.0/23
• 77.104.220.0/23
• 77.104.222.0/24
• 77.104.224.0/20
• 77.104.241.0/24
• 77.104.242.0/23
• 77.104.244.0/24
• 77.104.246.0/23
• 77.104.248.0/21
• 80.82.144.0/20
• 81.92.144.0/20
• 93.170.84.0/22
• 94.138.96.0/20
• 94.138.112.0/22
• 94.138.124.0/22
• 95.46.33.0/24
• 178.23.232.0/21
• 185.67.132.0/22
• 2001:678:e54::/48
• 2a02:da8::/32

Upstream networks

• AS203072 DomaTV s.r.o.

Downstream networks

• AS44546 ALFA TELECOM s.r.o.

Adjacent networks

• AS203072 DomaTV s.r.o.
• AS44546 ALFA TELECOM s.r.o.

Internet exchanges

• NIX.CZ - Neutral Internet eXchange for the Czech Republic — Prague, Czech Republic