Row

Resolvers

Country analysis – daily QPS averages for queries originating from resolvers in a given country during the last 30 days before July 27, 2024

Country Max qps Min qps Trend Average
USA 7 430 6 213 6 626
other 4 561 2 804 3 411
Czechia 3 155 2 222 2 683
Germany 2 256 1 602 2 010
Finland 1 582 879 1 200
Netherlands 1 272 742 1 003
Singapore 1 261 464 645
Ireland 1 004 394 636
France 697 505 624
China 729 464 624
UK 621 467 550
Russia 545 354 456
Sweden 1 561 225 408
India 447 298 361
Brazil 363 284 319
Poland 353 211 279

Query type analysis – daily QPS averages for queries with a given QTYPE during the last 30 days before July 27, 2024

QTYPE Max qps Min qps Trend Average
A 12 871 10 248 11 717
NS 4 396 2 940 3 787
AAAA 3 343 2 154 2 691
DS 2 151 1 636 1 909
MX 821 422 614
TXT 386 186 289
other 335 224 261
SOA 190 92 124
CNAME 169 77 120

Traffic flows – average distribution of QPS since 2024-07-20

Authoritative servers

Server analysis – daily QPS averages for queries reaching an authoritative server in a given city during the last 30 days before July 27, 2024

City Max QPS Min QPS Trend Average
Frankfurt am Main 4 645 3 249 4 091
Praha 4 273 2 730 3 430
Seattle (WA) 3 009 2 721 2 858
London 3 115 2 178 2 653
Reston (VA) 2 649 1 961 2 234
Tokyo 1 335 959 1 172
Singapore 1 761 936 1 141
Stockholm 1 372 616 1 007
undisclosed 737 587 676
São Paulo 688 354 583
Wien 735 400 525
Bratislava 553 346 475
Santiago de Chile 320 74 278
Kyiv 388 138 251
Milano 363 135 213
Johannesburg 159 102 126
Sydney 139 110 123

Response code analysis – daily QPS averages for queries responded with a given RCODE during the last 30 days before July 27, 2024

RCODE Max QPS Min QPS Trend Average
NoError 21 889 16 439 19 302
NXDomain 3 668 1 908 2 537
Refused 4 3 3
FormErr 1 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 July 25, 2024)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 230 823 3 408 1 055 662 1 025
United States 465 598 5 855 178 287 5 287
other 366 318 7 374 193 867 3 051
Sweden 221 307 163 220 919 85
Italy 218 654 272 215 154 41
Slovakia 135 000 339 224 245 58
Germany 125 228 2 583 64 349 977
United Kingdom 121 684 446 117 202 124

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of July 25, 2024)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS16509 AMAZON-02 278 668 2 320 4 937 2 082
AS208414 WEDOS Internet 251 814 6 251 811 5
AS24806 INTERNET CZ 221 014 127 216 941 24
AS25234 ACTIVE 24 183 508 6 183 514 7
AS29134 Webglobe 139 116 34 138 218 15
AS31034 Aruba 217 017 36 214 261 10
AS48689 Webglobe 128 114 10 127 376 2
other other 1 489 828 17 901 1 055 244 8 503

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].