Row

Resolvers

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

Country Max qps Min qps Trend Average
USA 7 717 6 105 6 750
other 4 177 3 319 3 644
Czechia 3 443 2 644 3 085
Germany 2 624 1 935 2 350
Netherlands 1 587 996 1 336
Sweden 1 267 241 1 039
Ireland 1 039 468 768
France 888 552 705
Singapore 1 137 546 698
UK 717 543 639
China 679 442 567
India 493 345 402
Russia 495 360 389
Brazil 848 302 371
Finland 385 222 317
Hong Kong SAR China 317 235 278

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

QTYPE Max qps Min qps Trend Average
A 13 131 10 980 12 380
NS 4 726 3 529 4 315
AAAA 3 030 2 425 2 787
DS 2 248 1 687 1 955
MX 897 458 696
other 494 319 396
TXT 468 204 326
SOA 197 94 140

Traffic flows – average distribution of QPS since 2024-12-14

Authoritative servers

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

City Max QPS Min QPS Trend Average
Frankfurt am Main 4 762 3 744 4 331
Praha 5 406 3 442 4 308
London 2 865 2 245 2 631
Seattle (WA) 2 855 2 221 2 594
Reston (VA) 2 741 2 116 2 400
Singapore 1 579 1 096 1 257
Tokyo 1 420 993 1 136
Stockholm 1 130 533 1 022
São Paulo 1 015 563 669
undisclosed 697 383 578
Wien 632 473 565
Kyiv 764 382 532
Bratislava 616 438 525
Santiago de Chile 367 225 256
Los Angeles (CA) 488 174 248
Milano 221 150 168
Johannesburg 266 95 111
Sydney 107 80 87

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

RCODE Max QPS Min QPS Trend Average
NoError 22 321 18 180 20 764
NXDomain 3 015 1 935 2 568
Refused 80 3 13
FormErr 1 0 0
NotImp 0 0 0
NotAuth 0 0 0
ServFail 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 December 19, 2024)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 210 644 3 372 1 066 158 1 028
United States 471 090 4 500 169 227 3 352
other 324 439 8 696 195 735 4 984
Sweden 221 588 149 221 120 82
Italy 220 219 258 217 051 41
United Kingdom 151 936 392 119 951 138
Slovakia 135 522 344 214 879 59
Germany 126 068 2 577 63 680 1 007

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of December 19, 2024)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS16509 AMAZON-02 284 217 2 327 5 057 2 078
AS208414 WEDOS Internet 257 249 6 257 244 5
AS24806 INTERNET CZ 222 488 128 218 337 26
AS25234 ACTIVE 24 184 088 6 184 092 7
AS29134 Webglobe 139 157 32 138 270 14
AS31034 Aruba 219 022 39 216 239 10
AS48689 Webglobe 128 488 10 127 775 2
other other 1 467 540 17 740 1 079 520 8 549

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].