AS5610 O2 Czech Republic, A.S. details

Summary

Country	Czechia
Organization	O2 Czech Republic, A.S.
Domain	o2.cz
Number of IPv4	1,999,616
Number of IPv6	9.5074× 10²⁹
AS Type	ISP
Registry	RIPE NCC
Allocated	July 22, 2002 (about 23 years ago)
Updated	June 12, 2024 (about 1 year ago)

IP Ranges

AS5610 announces 63 IPv4 ranges and 5 IPv6 ranges.

That's a total of 1,999,616 IPv4 addresses and 9.5074× 10²⁹ IPv6 addresses.

Prefix	Organization	Size	Registry	Status
5.23.39.0/24	Gi Group S.P.A.	256	RIPE NCC	ALLOCATED PA
37.188.128.0/17	O2 Czech Republic, A.S.	32,768	RIPE NCC	ASSIGNED PA
80.188.0.0/17	O2 Czech Republic, A.S.	32,768	RIPE NCC	ALLOCATED PA
80.188.40.0/24	KOROZLUKY 1	256	RIPE NCC	ASSIGNED PA
80.188.128.0/17	O2 Czech Republic, A.S.	32,768	RIPE NCC	ALLOCATED PA
80.188.222.0/24	DUKELSKYCHHRDINU	256	RIPE NCC	ASSIGNED PA
81.90.160.0/20	TERMSnet	4,096	RIPE NCC	ASSIGNED PA
81.90.168.0/21	Elsat Spol. S R.O.	2,048	RIPE NCC	ASSIGNED PA
81.90.168.0/24	Elsat Spol. S R.O.	256	RIPE NCC	ASSIGNED PA
81.90.170.0/24	Elsat Spol. S R.O.	256	RIPE NCC	ASSIGNED PA
81.90.173.0/24	Elsat Spol. S R.O.	256	RIPE NCC	ASSIGNED PA
83.69.32.0/19	Losan Internet S.R.O.	8,192	RIPE NCC	ASSIGNED PA
83.208.0.0/18	XDSL NETWORK-ADSL	16,384	RIPE NCC	ASSIGNED PA
83.208.0.0/16	XDSL NETWORK-ADSL	65,536	RIPE NCC	ASSIGNED PA
83.208.64.0/18	XDSL NETWORK-ADSL	16,384	RIPE NCC	ASSIGNED PA
83.208.128.0/19	XDSL NETWORK-ADSL	8,192	RIPE NCC	ASSIGNED PA
83.208.220.0/22	O2 Czech Republic, A.S.	1,024	RIPE NCC	ALLOCATED PA
85.70.0.0/17	XDSL NETWORK-ADSL	32,768	RIPE NCC	ASSIGNED PA
85.70.128.0/17	XDSL NETWORK-ADSL	32,768	RIPE NCC	ASSIGNED PA
85.71.0.0/16	XDSL NETWORK-ADSL	65,536	RIPE NCC	ASSIGNED PA
85.71.224.0/19	O2 Czech Republic, A.S.	8,192	RIPE NCC	ALLOCATED PA
85.160.0.0/15	Address Block # 2 of Eurotel Praha	131,072	RIPE NCC	ASSIGNED PA
85.193.0.0/18	O2 Czech Republic, A.S.	16,384	RIPE NCC	ALLOCATED PA
88.83.160.0/19	Termsnet - Core Network & Backbone P2p Lines	8,192	RIPE NCC	ASSIGNED PA
88.83.175.0/24	O2 Czech Republic, A.S.	256	RIPE NCC	ALLOCATED PA
88.100.0.0/15	XDSL NETWORK-ADSL	131,072	RIPE NCC	ASSIGNED PA
88.100.0.0/14	XDSL NETWORK-ADSL	262,144	RIPE NCC	ASSIGNED PA
88.102.0.0/16	XDSL NETWORK-ADSL	65,536	RIPE NCC	ASSIGNED PA
90.176.32.0/19	XDSL NETWORK-ADSL	8,192	RIPE NCC	ASSIGNED PA
90.176.64.0/18	XDSL NETWORK-ADSL	16,384	RIPE NCC	ASSIGNED PA
90.176.128.0/17	XDSL NETWORK-ADSL	32,768	RIPE NCC	ASSIGNED PA
90.176.170.0/24	XDSL NETWORK-ADSL	256	RIPE NCC	ASSIGNED PA
90.177.0.0/16	XDSL NETWORK-ADSL	65,536	RIPE NCC	ASSIGNED PA
90.178.0.0/15	XDSL NETWORK-ADSL	131,072	RIPE NCC	ASSIGNED PA
90.180.0.0/14	XDSL NETWORK-ADSL	262,144	RIPE NCC	ASSIGNED PA
90.181.0.0/16	XDSL NETWORK-ADSL	65,536	RIPE NCC	ASSIGNED PA
90.182.0.0/16	O2 Czech Republic, A.S.	65,536	RIPE NCC	ALLOCATED PA
90.182.108.0/24	O2 Czech Republic, A.S.	256	RIPE NCC	ALLOCATED PA
90.183.0.0/16	Brno	65,536	RIPE NCC	ASSIGNED PA
91.191.64.0/18	O2 Slovakia, S.R.O.	16,384	RIPE NCC	ASSIGNED PA
91.193.132.0/22	Burza Cennych Papiru Praha, A.S.	1,024	RIPE NCC	ASSIGNED PI
91.213.10.0/24	Cgi IT Czech Republic S.R.O.	256	RIPE NCC	ASSIGNED PI
91.232.82.0/24	Abis Czech, A.S.	256	RIPE NCC	ASSIGNED PI
92.243.192.0/19	O2 Czech Republic, A.S.	8,192	RIPE NCC	ALLOCATED PA
109.80.0.0/15	O2 Czech Republic, A.S.	131,072	RIPE NCC	ASSIGNED PA
109.81.112.0/20	Fix Bb Czechia-vl	4,096	RIPE NCC	ASSIGNED PA
109.81.160.0/20	Cgn Fix Broadband Praha-vl	4,096	RIPE NCC	ASSIGNED PA
160.218.0.0/16	O2 Czech Republic, A.S.	65,536	RIPE NCC	ALLOCATED PA
161.195.144.0/24	Aramark Services, Inc.	256	ARIN	ALLOCATION
185.61.228.0/22	O2 Czech Republic, A.S.	1,024	RIPE NCC	ALLOCATED PA
185.143.112.0/22	KNET-CLOUD-PRG	1,024	RIPE NCC	ASSIGNED PA
193.17.13.0/24	Enterprise Services France SAS	256	RIPE NCC	ASSIGNED PI
193.84.12.0/23	Logis A.S.	512	RIPE NCC	ASSIGNED PI
193.84.14.0/23	Logis A.S.	512	RIPE NCC	ASSIGNED PI
194.50.248.0/23	Banka Creditas A.s	512	RIPE NCC	ASSIGNED PI
194.165.47.0/24	Ing. Jiri Orsag, Csc.	256	RIPE NCC	ASSIGNED PI
194.228.0.0/17	O2 Czech Republic, A.S.	32,768	RIPE NCC	ALLOCATED PA
194.228.72.0/22	O2 Czech Republic, A.S.	1,024	RIPE NCC	ALLOCATED PA
194.228.128.0/17	O2 Czech Republic, A.S.	32,768	RIPE NCC	ALLOCATED PA
195.5.186.0/24	Agrofert JSC	256	RIPE NCC	ASSIGNED PI
195.246.96.0/23	Ppf Banka A.S.	512	RIPE NCC	ASSIGNED PI
217.117.208.0/20	O2 Czech Republic, A.S.	4,096	RIPE NCC	ALLOCATED PA
217.194.160.0/20	Termsnet - Serverhousing Subnet	4,096	RIPE NCC	ASSIGNED PA

Prefix	Organization	Size	Registry	Status
2001:67c:dd4::/48	Itixo S.R.O.	1.2089× 10²⁴	RIPE NCC	ASSIGNED PI
2001:41d8::/32	O2 Czech Republic, A.S.	7.9228× 10²⁸	RIPE NCC	ALLOCATED-BY-RIR
2a00:1028::/29	Assigned for Infrastructure	6.3383× 10²⁹	RIPE NCC	ASSIGNED
2a00:1028::/32	Assigned for Infrastructure	7.9228× 10²⁸	RIPE NCC	ASSIGNED
2a02:9b8::/31	O2 Czech Republic, A.S.	1.5846× 10²⁹	RIPE NCC	ALLOCATED-BY-RIR

AS5610 actively fosters the following peering relationships that enhance network performance through direct, settlement-free traffic exchange. Even with a modest number of peers, each connection serves as a strategic asset—optimizing routing, reducing latency, and minimizing transit costs.

AS1764 AS4455 AS5405 AS6461 AS6939 AS8218 AS8220 AS15935 AS16019 AS22356 AS24482 AS29504 AS32590 AS33891 AS39120 AS40994 AS47232 AS49544 AS60068 AS199490 AS202297 AS212483 AS263444

AS5610 connects to the global Internet via at least 2 upstream providers. In this setup, AS5610 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.

AS174 AS1299

AS5610 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS5610's role in extending Internet access beyond its own infrastructure.

AS2571 AS13105 AS15380 AS16246 AS21241 AS21942 AS25238 AS25321 AS28952 AS35096 AS38952 AS39453 AS42908 AS43037 AS43757 AS43866 AS48451 AS49580 AS59747 AS62083 AS197353 AS197920 AS198101 AS199059 AS201163 AS203411 AS204172 AS204907 AS205233 AS206613 AS206683 AS208712 AS208906 AS208950 AS211274 AS211731 AS215711

AS5610

O2 Czech Republic, A.S. — o2.cz

Summary

IP Ranges

Peers

Upstreams

Downstreams