AS42908 — ORIGINAL AS CZ-NORDICTELECOMREGIONAL

AS42908 announces 35 IPv4 prefixes covering 183,296 addresses and 9 IPv6 prefixes.

About this network

CZ-NORDICTELECOMREGIONAL is operated by O2 Czech Republic, a.s.

What it's used for

• The address space carries residential and business subscriber traffic, evidenced by reverse DNS entries such as 213-19-32-0.rno.o2.cz and 78-136-144-0.rno.o2.cz.
• The AS announces 183,296 IPv4 addresses across 35 prefixes and 9 IPv6 prefixes, while maintaining only 3 observed routing neighbours.
• This high address-to-neighbour ratio indicates an access network providing connectivity to end-users rather than a transit provider.

Notable

• All sampled registrants are listed as 5610-Tech-and-Admin; O2 Czech Republic, a.s., which aligns with the AS holder.
• The address inventory consists of multiple large blocks, including /17 and /18 prefixes, reflecting a substantial legacy allocation.
• The AS handle CZ-NORDICTELECOMREGIONAL references a former entity name, while the current operator is O2 Czech Republic, a major telecommunications provider in the country.

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

Announced prefixes

• 5.102.48.0/20
• 31.10.56.0/21
• 45.159.116.0/22
• 46.183.56.0/21
• 46.231.72.0/21
• 77.95.192.0/21
• 78.136.128.0/18
• 80.78.136.0/22
• 80.79.0.0/22
• 80.87.176.0/20
• 80.90.128.0/20
• 80.243.236.0/22
• 80.251.240.0/20
• 88.81.64.0/19
• 91.187.32.0/19
• 92.61.80.0/20
• 93.92.48.0/21
• 93.93.32.0/21
• 94.241.64.0/18
• 109.108.96.0/19
• 176.102.128.0/19
• 178.17.80.0/20
• 185.78.12.0/22
• 185.82.236.0/22
• 185.108.60.0/22
• 185.157.240.0/22
• 188.119.96.0/22
• 193.42.128.0/22
• 193.107.252.0/22
• 213.19.0.0/17
• 213.155.32.0/19
• 213.250.192.0/18
• 217.170.96.0/20
• 217.196.112.0/20
• 217.197.144.0/20
• 2a00:e4c0::/32
• 2a01:9f40::/29
• 2a02:2428::/32
• 2a02:2588::/29
• 2a03:1600::/32
• 2a03:7a00::/32
• 2a03:a820::/32
• 2a07:cc80::/29
• 2a0c:8b40::/29

Upstream networks

• AS5610 O2 Czech Republic, a.s.

Downstream networks

• AS202643 NetSERV, s.r.o.
• AS33442 Zebra Technologies Corporation

Adjacent networks

• AS5610 O2 Czech Republic, a.s.
• AS202643 NetSERV, s.r.o.
• AS33442 Zebra Technologies Corporation