Czech Republic

Users able to use IPv6 (APNIC)

38.8%

Source: APNIC Labs IPv6 measurement · as of 2026-10-14

Users preferring IPv6 (APNIC)

36.8%

Source: APNIC Labs IPv6 measurement · as of 2026-10-14

APNIC measurement samples

3,221,422

Source: APNIC Labs IPv6 measurement · as of 2026-10-14

IPv6 users (Cisco 6lab)

12.9%

Source: Cisco 6lab statistics (community mirror) · as of 2026-10-14

IPv6 allocated (/32 equivalents)

3,083

ARIN, RIPE NCC

Source: ARIN delegation file (extended), RIPE NCC delegation file · as of 2026-10-14

Top websites on IPv6

Share of the country's top websites fully reachable over IPv6: web 54.0%, email 68.0%, DNS 92.0%.

Source: Vyncke IPv6 deployment status (top websites per country) · as of 2026-10-14

Source: APNIC Labs per-economy history and networks · as of 2026-10-14

Network	IPv6-capable	Prefers IPv6	Samples
AS5610 O2-CZECH-REPUBLIC - O2 Czech Republic, a.s.	55.4%	54.2%	979,208
AS13036 TMOBILE-CZ - T-Mobile Czech Republic a.s.	46.0%	42.2%	543,694
AS16019 VODAFONE-CZ-AS - Vodafone Czech Republic a.s.	64.9%	62.9%	515,021
AS44489 Starnet - Starnet	19.2%	17.7%	148,066
AS30764 PODA-AS - PODA a.s.	57.7%	56.1%	75,521
AS28725 CETIN-AS - CETIN a.s.	2.2%	1.3%	41,617
AS204666 TLAPNET-CZ - Jiri Tlapak	2.0%	0.1%	34,223
AS8251 NFX_ZSPO - FreeTel, s.r.o.	4.9%	3.5%	30,405
AS29208 QUANTCOM-AS - Quantcom, a.s.	12.0%	9.9%	29,169
AS16246 AS16246 - O2 Czech Republic, a.s.	1.6%	0.2%	25,710
AS15614 Dragon - Dragon Internet a.s.	3.4%	0.3%	23,413
AS25512 CDT-AS - CD-Telematika a.s.	0.8%	0.2%	22,560
AS42306 EDERA_Group - CEZNET s.r.o.	1.7%	0.3%	20,701
AS197296 UNITED_NETWORKS_SE - United Networks SE	3.9%	0.2%	19,302
AS28972 MSOFT-AS - M-SOFT, spol. s r.o.	1.8%	0.1%	17,943
AS25248 BlueTone-AS - RADIOKOMUNIKACE a.s.	3.3%	0.3%	16,927
AS2852 CESNET2 - CESNET z.s.p.o.	21.0%	19.3%	16,456
AS196735 AS-JONCZ - PODA a.s.	2.5%	1.0%	15,966
AS47232 ISPAlliance - ISP Alliance a.s.	13.9%	12.0%	15,918
AS12570 ITSELF - O2 Czech Republic, a.s.	3.8%	1.3%	15,005

Source: APNIC Labs per-economy history and networks · as of 2026-10-14