Row

Resolvers

Country analysis – daily QPS averages for queries originating from resolvers in a given country during the last 30 days before January 30, 2026

Country Max qps Min qps Trend Average
USA 8 445 6 423 7 642
other 6 013 4 602 5 346
Germany 3 678 2 791 3 393
Czechia 3 501 2 593 3 095
Netherlands 2 053 1 301 1 685
France 1 422 951 1 200
Singapore 1 458 905 1 156
UK 1 272 963 1 100
Ireland 1 380 852 1 089
Brazil 1 171 817 981
China 1 239 720 967
India 749 523 621
Russia 636 427 508
Japan 500 384 430
Sweden 557 358 422
Hong Kong SAR China 474 282 370

Query type analysis – daily QPS averages for queries with a given QTYPE during the last 30 days before January 30, 2026

QTYPE Max qps Min qps Trend Average
A 17 812 15 081 16 439
NS 5 391 4 115 4 796
AAAA 3 759 2 874 3 337
DS 3 177 2 581 2 913
MX 832 533 688
DNSKEY 609 499 555
TXT 494 267 357
other 385 272 337
SOA 297 169 210

Traffic flows – average distribution of QPS since 2026-01-23

Authoritative servers

Server analysis – daily QPS averages for queries reaching an authoritative server in a given city during the last 30 days before January 30, 2026

City Max QPS Min QPS Trend Average
Frankfurt am Main 7 673 5 532 6 518
Praha 5 522 3 950 4 735
London 3 777 1 222 3 196
Singapore 3 095 2 204 2 675
Reston (VA) 3 497 606 2 360
São Paulo 2 397 1 965 2 200
Tokyo 2 006 1 359 1 710
Seattle (WA) 1 799 1 156 1 500
Stockholm 1 416 973 1 151
Wien 1 413 746 933
Bratislava 1 008 629 727
Johannesburg 543 416 472
undisclosed 635 351 451
Kyiv 500 245 369
Santiago de Chile 643 188 367
Milano 323 223 264
Los Angeles (CA) 471 173 252
Sydney 156 102 126

Response code analysis – daily QPS averages for queries responded with a given RCODE during the last 30 days before January 30, 2026

RCODE Max QPS Min QPS Trend Average
NoError 29 539 24 623 27 098
NXDomain 3 600 2 556 2 886
Refused 68 2 17
ServFail 292 0 9
FormErr 2 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 January 29, 2026)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 230 502 3 289 1 090 299 1 132
United States 437 971 4 352 398 866 3 342
other 284 598 8 687 208 729 5 099
Italy 261 207 238 258 200 46
Sweden 225 081 163 223 986 93
United Kingdom 162 043 335 161 631 126
Slovakia 147 694 338 177 813 60
Germany 135 302 2 312 76 093 997

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of January 29, 2026)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS14061 DigitalOcean, LLC 105 989 182 101 756 70
AS16509 Amazon.com, Inc.  297 333 2 292 273 958 2 083
AS208414 WEDOS Internet 268 970 9 268 961 4
AS24806 INTERNET CZ 231 502 136 227 007 39
AS25234 ACTIVE 24 189 197 6 189 197 6
AS29134 Webglobe 144 968 44 144 214 12
AS31034 Aruba 227 579 39 224 898 9
other other 1 258 802 17 006 928 773 8 672

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].