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AS42908 CZ-NORDICTELECOMREGIONAL O2 Czech Republic, a.s.

Czechia · Autonomous System

IPv4 announced

183.3K

0.01 × /8

IPv6 announced

2.4M

/48 blocks

Prefixes

routed

Country

Czechia

Interconnection (PeeringDB)

Where this network meets others — public exchange points, colocation facilities, and declared peering capacity.

Internet exchanges

IXPs present

Facilities

colocation facilities

Peering capacity

—

no peering ports listed

Network type

—

Scope: Not Disclosed

Topology (CAIDA AS Rank)

The network's position in the inter-domain routing hierarchy: its customer cone, connectivity, and transit role.

Customer cone

ASes reachable as customers

AS rank

#6,954

by customer-cone size (1 = largest)

Connectivity

1 providers · 0 peers · 2 customers

Transit role

access

CAIDA transit classification

Upstream providers

Settlement-free peers

Peering & transit neighbours (CAIDA)

Inferred AS-level relationships: 1 upstream providers, 0 peers and 2 downstream customers. The graph shows the largest few of each; the lists link through.

Upstream providers1

give this network transit

AS5610 O2-CZECH-REPUBLIC O2 Czech Republic, a.s.

Settlement-free peers0

exchange traffic directly

None recorded.

Downstream customers2

buy transit from it

Relationships are inferred from BGP by CAIDA and refreshed monthly. Transit links are well captured; some private and IXP peering is under-observed, so peer counts are a lower bound.

Routing hygiene & RPKI

How well this network secures and documents its BGP announcements — RPKI origin validation, IRR registration, and an overall hygiene score.

Hygiene score

0–100 · RPKI × IRR × consistency

RPKI coverage

100%

2.6M of 2.6M routed addrs valid

RPKI invalid

no invalid prefixes

IRR registered

59%

26 of 44 prefixes documented

Announcement composition44 routed prefixes

Announced prefixes

Currently announced prefixes, live from RIPEstat.

44 prefixes currently seen by RIPEstat.

80.243.236.0/22213.250.192.0/18176.102.128.0/192a01:9f40::/29213.19.0.0/172a03:7a00::/322a03:a820::/3293.93.32.0/21185.78.12.0/2280.251.240.0/20213.155.32.0/19193.42.128.0/222a02:2428::/3280.90.128.0/20217.170.96.0/20217.196.112.0/2078.136.128.0/1845.159.116.0/2277.95.192.0/21178.17.80.0/2080.87.176.0/20217.197.144.0/2046.183.56.0/212a03:1600::/325.102.48.0/2046.231.72.0/2131.10.56.0/21109.108.96.0/19185.82.236.0/2291.187.32.0/192a02:2588::/29185.108.60.0/2280.79.0.0/2293.92.48.0/2192.61.80.0/202a07:cc80::/292a0c:8b40::/2980.78.136.0/22193.107.252.0/22185.157.240.0/222a00:e4c0::/3288.81.64.0/1994.241.64.0/18188.119.96.0/22

Fetching announced prefixes from RIPEstat…