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 (Jul 2017)

  ISP IPv6 tests count
1.Hurricane Electric776
2.Telefonica O2 Cz494
3.Upc Czech242
4.Starnet s.r.o.235
5.Internet Cz122
6.Jaroslav Doubrava117
7.Poda103
8.Eldata93
9.JMNet62
10.UPC Ceska republika57
11.Cesnet6-tcz54
12.Karneval Media52
13.Planet A47
14.Casablanca INT network46
15.T-Mobile Czech Republic43
16.Grapesc I39
17.GTTs36
18.GIN's network35
19.Amigonet26
20.Ceske Radiokomunikace26
21.Dattelkabel20
22.M247-prague-servers19
23.Cerberos MB advertised17
24.Zoner16
25.Airwaynet15

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, Jul 2017)

  ISP Unique IPv6 addresses
1.Hurricane Electric368
2.Telefonica O2 Cz279
3.Upc Czech165
4.Starnet s.r.o.126
5.Poda60
6.Jaroslav Doubrava60
7.JMNet35
8.Karneval Media35
9.UPC Ceska republika35
10.GTTs32
11.Internet Cz30
12.Planet A27
13.T-Mobile Czech Republic27
14.Cesnet6-tcz26
15.Eldata21
16.Grapesc I20
17.GIN's network19
18.Ceske Radiokomunikace16
19.Casablanca INT network13
20.Amigonet13
21.Dattelkabel12
22.Airwaynet12
23.Zoner12
24.Eurosignal10
25.NFX network9

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 (Jul 2017)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.Telco Pro Services900.0%9100.0%
2.Master 1-mai600.0%6100.0%
3.Amigonet2600.0%26100.0%
4.Ovanet500.0%5100.0%
5.Zoner1600.0%16100.0%
6.JHComp network800.0%8100.0%
7.Gts Novera800.0%8100.0%
8.MORNET-CZ Campis1500.0%15100.0%
9.Sprava informacnich technologii mesta Plzne1100.0%11100.0%
10.JAW.cz800.0%8100.0%
11.Grapesc I3912.6%3897.4%
12.JMNet6223.2%6096.8%
13.Internet Cz12243.3%11896.7%
14.Ceske Radiokomunikace2613.8%2596.2%
15.Starnet s.r.o.235125.1%22394.9%
16.GTTs3625.6%3494.4%
17.Airwaynet1516.7%1493.3%
18.Dragon Internet1317.7%1292.3%
19.Jaroslav Doubrava117108.5%10791.5%
20.Spoje.Net s.r.o.8112.5%787.5%
21.Poda1031514.6%8885.4%
22.Hurricane Electric77611715.1%65984.9%
23.Upc Czech2424016.5%20283.5%
24.GIN's network35617.1%2982.9%
25.Casablanca INT network46817.4%3882.6%

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 (Jul 2017)

  ISP Test count IPv6 average
1.RadioLink12189.5 Mbps
2.Dattelkabel2087.3 Mbps
3.Jaroslav Doubrava11767.5 Mbps
4.Upc Czech24250.6 Mbps
5.UPC Ceska republika5747.7 Mbps
6.Karneval Media5246.6 Mbps
7.Planet A4745.6 Mbps
8.Eurosignal1143.0 Mbps
9.Grapesc I3940.2 Mbps
10.Poda10340.1 Mbps
11.Sys-datacom I.1527.1 Mbps
12.Starnet s.r.o.23524.9 Mbps
13.Airwaynet1522.9 Mbps
14.Hurricane Electric77621.0 Mbps
15.Telefonica O2 Cz49419.0 Mbps
16.JMNet6218.9 Mbps
17.Network of Coolhousing717.0 Mbps
18.Sprava informacnich technologii mesta Plzne1116.1 Mbps
19.Cesnet6-tcz5415.7 Mbps
20.T-Mobile Czech Republic4315.2 Mbps
21.Casablanca INT network4614.0 Mbps
22.GIN's network3512.8 Mbps
23.NetAir network1112.5 Mbps
24.JAW.cz811.7 Mbps
25.Internet Cz12211.2 Mbps