Czech Republic IPv6 in Czech Republic

These graphs show the evolution of default protocol, v6 address types, and average bandwidth in Czech Republic over time.

They are generated using the data collected by the ipv6-test.com connection test page, and are updated on a monthly basis.

Overall IPv6 and v4 protocol support in Czech Republic

This graph shows the evolution of IPv6 support vs IPv4 for all our connection test.

The numbers are percentages, so we can expect almost 100% of hosts supporting IPv4 with a slow growth for IPv6.

Top 25 internet service providers for IPv6 in Czech Republic (May 2017)

  ISP IPv6 tests count
1.Hurricane Electric1,082
2.Telefonica O2 Cz502
3.Starnet s.r.o.328
4.Upc Czech145
5.Poda129
6.Planet A128
7.Cesnet6-tcz126
8.Internet Cz118
9.Eldata115
10.JMNet112
11.ABAK network74
12.Jaroslav Doubrava68
13.T-Mobile Czech Republic67
14.Casablanca INT network56
15.Dial Telecom50
16.GTTs39
17.Karneval Media35
18.M247-prague-servers35
19.Spcom34
20.UPC Ceska republika28
21.MORNET-CZ Campis22
22.GIN's network22
23.Airwaynet21
24.Dattelkabel19
25.Netbox19

IPv6 and v4 protocol support in Czech Republic (unique addresses)

This graph shows the evolution of IPv6 support vs IPv4 for unique users of our connection test.

The numbers are percentages, so we can expect a slow growth towards 50% v4 / 50% v6.

Top 25 internet service providers for IPv6 in Czech Republic (unique addresses, May 2017)

  ISP Unique IPv6 addresses
1.Hurricane Electric498
2.Telefonica O2 Cz262
3.Starnet s.r.o.129
4.JMNet80
5.Poda73
6.Planet A73
7.Upc Czech58
8.Cesnet6-tcz46
9.T-Mobile Czech Republic42
10.Jaroslav Doubrava32
11.GTTs28
12.Casablanca INT network23
13.ABAK network19
14.Internet Cz17
15.Karneval Media17
16.Eldata16
17.GIN's network15
18.Spcom15
19.UPC Ceska republika14
20.Dial Telecom13
21.Dattelkabel10
22.Telco Pro Services10
23.NFX network10
24.Vutbr69
25.Network of Coolhousing9

Default browser protocol in Czech Republic

This graph shows the percentage of browsers that default to IPv6 vs. IPv4 when visiting the ipv6-test connection test.

Hopefully, in the not so distant future, the v6 part will grow taller than the v4 one.

Default browser protocol in Czech Republic (dual-stack users)

This graph shows the percentage of browsers that default to IPv6 vs. IPv4 for users that have both v4 and v6 connectivity.

Usually a system will default to v6 when it's available, but in some cases with tunneled connections, v4 stays the default.

Top 25 internet service providers for IPv6 default in Czech Republic (May 2017)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.Whois protection s.r.o.700.0%7100.0%
2.Eurosignal900.0%9100.0%
3.MORNET-CZ Campis2200.0%22100.0%
4.XLNET s.r.o.600.0%6100.0%
5.JAW.cz900.0%9100.0%
6.Vshosting600.0%6100.0%
7.Telco Pro Services1300.0%13100.0%
8.WEDOS Internet1000.0%10100.0%
9.CD-Telematika600.0%6100.0%
10.Spcom3400.0%34100.0%
11.M-SOFT spol s r.o.600.0%6100.0%
12.Starnet s.r.o.328216.4%30793.6%
13.GTTs3937.7%3692.3%
14.Ovanet1317.7%1292.3%
15.Grapesc I1218.3%1191.7%
16.JMNet112119.8%10190.2%
17.T-Mobile Czech Republic67710.4%6089.6%
18.Planet A1281612.5%11287.5%
19.Dragon Internet8112.5%787.5%
20.Cesnet6-tcz1261612.7%11087.3%
21.GIN's network22313.6%1986.4%
22.Dial Telecom50714.0%4386.0%
23.Network of Ignum Telekomunikace7114.3%685.7%
24.JHComp network13215.4%1184.6%
25.Amccomp6116.7%583.3%

IPv6 address types in Czech Republic

Here you can see the evolution of address types over time, and measure usage of 6to4 and Teredo tunneled connectivity.

It should be noted that because 6rd works with native addresses, it cannot be detected here as tunneled. This is also the case with VPN based tunnels.

Downstream bandwidth in Czech Republic

This graph illustrates the connection speed gap between IPv4 and IPv6, numbers represent v6 speed as percentage of v4 speed.

The lower IPv6 speeds are often caused by tunneling overhead or insufficient v6 connectivity or peering capacity at ISPs.

Top 25 internet service providers for IPv6 speed in Czech Republic (May 2017)

  ISP Test count IPv6 average
1.Vshosting6407.4 Mbps
2.RadioLink6246.6 Mbps
3.JAW.cz9214.0 Mbps
4.Upc Czech14575.8 Mbps
5.Karneval Media3559.2 Mbps
6.JHComp network1356.8 Mbps
7.WIA spol. s r.o.1745.8 Mbps
8.Dattelkabel1945.1 Mbps
9.Dial Telecom5044.4 Mbps
10.NetAir network1542.1 Mbps
11.Grapesc I1240.2 Mbps
12.CD-Telematika631.5 Mbps
13.Spcom3430.7 Mbps
14.Poda12928.3 Mbps
15.Cesnet6-tcz12627.9 Mbps
16.Planet A12825.7 Mbps
17.Internext 2000525.7 Mbps
18.RIO Media724.9 Mbps
19.NFX network1122.9 Mbps
20.UPC Ceska republika2822.2 Mbps
21.JMNet11219.5 Mbps
22.Amccomp619.2 Mbps
23.GIN's network2217.3 Mbps
24.Vutbr61116.9 Mbps
25.Maxprogres516.0 Mbps