Row

Resolvers

Country analysis – daily QPS averages for queries originating from resolvers in a given country during the last 30 days before November 21, 2024

Country Max qps Min qps Trend Average
USA 7 879 6 498 7 041
other 4 000 3 148 3 563
Czechia 3 514 2 513 3 083
Germany 2 502 1 914 2 302
Netherlands 1 595 911 1 303
Sweden 1 489 1 036 1 094
Ireland 1 007 418 702
France 769 548 663
UK 698 506 617
Singapore 687 522 591
China 621 423 491
India 456 339 395
Russia 449 340 395
Finland 432 230 340
Brazil 379 269 305
Canada 300 235 261

Query type analysis – daily QPS averages for queries with a given QTYPE during the last 30 days before November 21, 2024

QTYPE Max qps Min qps Trend Average
A 13 203 10 787 12 296
NS 5 497 3 919 4 507
AAAA 2 869 2 273 2 590
DS 2 183 1 715 1 914
MX 832 434 668
other 595 426 520
TXT 378 206 308

Traffic flows – average distribution of QPS since 2024-11-14

Authoritative servers

Server analysis – daily QPS averages for queries reaching an authoritative server in a given city during the last 30 days before November 21, 2024

City Max QPS Min QPS Trend Average
Frankfurt am Main 4 612 3 598 4 146
Praha 5 222 3 033 4 028
London 3 231 2 427 2 874
Seattle (WA) 2 970 2 627 2 832
Reston (VA) 2 794 1 977 2 309
Stockholm 1 158 968 1 066
Singapore 1 304 934 1 060
Tokyo 1 175 898 1 012
undisclosed 905 219 792
São Paulo 727 540 606
Bratislava 650 466 556
Kyiv 700 357 512
Wien 664 387 493
Los Angeles (CA) 496 189 279
Santiago de Chile 269 205 243
Milano 163 105 138
Johannesburg 145 98 118
Sydney 202 77 109

Response code analysis – daily QPS averages for queries responded with a given RCODE during the last 30 days before November 21, 2024

RCODE Max QPS Min QPS Trend Average
NoError 22 690 18 035 20 441
NXDomain 3 078 2 486 2 707
Refused 20 3 5
FormErr 2 1 1
ServFail 0 0 0
NotAuth 0 0 0
NotImp 0 0 0
BADSIG 0 0 0
BADVERS 0 0 0

Row

IP version

Traffic rate by IP version – time series of daily QPS averages for IPv4 and IPv6

Protocol

Traffic rate by transport protocol – time series of daily QPS averages for UDP and TCP

SLD countries

Location of authoritative DNS servers for second-level domains under .cz – countries (as of November 14, 2024)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 208 465 3 398 1 062 842 1 029
United States 466 454 4 507 169 173 3 344
other 325 406 8 673 192 352 4 967
Sweden 221 637 152 221 179 81
Italy 219 728 263 216 556 41
United Kingdom 152 210 425 119 770 138
Slovakia 135 358 346 217 586 60
Germany 125 697 2 581 63 216 997

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of November 14, 2024)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS16509 AMAZON-02 282 422 2 316 5 022 2 078
AS208414 WEDOS Internet 255 533 6 255 528 5
AS24806 INTERNET CZ 222 029 130 217 877 26
AS25234 ACTIVE 24 183 801 6 183 806 7
AS29134 Webglobe 139 011 33 138 120 15
AS31034 Aruba 218 509 38 215 724 10
AS48689 Webglobe 128 379 10 127 663 2
other other 1 464 079 17 806 1 076 986 8 514

Catchment areas

Mapping of countries to a destination DNS server that receives most of the traffic from a given country.

DNSSEC

Traffic rate by DNSSEC – time series of daily QPS averages by DNSSEC support
Whether a DNS query supports DNSSEC or not is determined from the EDNS0 flag DNSSEC OK (DO) [RFC 3225].