Row

Resolvers

Country analysis – daily QPS averages for queries originating from resolvers in a given country during the last 30 days before September 25, 2026

Country Max qps Min qps Trend Average
USA 12 013 9 229 10 661
other 10 274 6 191 8 112
Germany 11 591 4 105 5 344
Czechia 3 761 2 584 3 229
Netherlands 3 095 1 843 2 284
Singapore 2 643 1 711 2 012
Brazil 2 386 1 369 1 868
China 1 738 1 160 1 446
France 1 273 860 1 032
India 1 988 649 1 020
Ireland 1 433 716 950
UK 1 144 818 941
Russia 1 372 618 915
Hong Kong SAR China 1 070 623 766
Italy 873 404 631
Japan 793 439 526

Query type analysis – daily QPS averages for queries with a given QTYPE during the last 30 days before September 25, 2026

QTYPE Max qps Min qps Trend Average
A 26 715 20 383 22 567
NS 9 575 5 757 7 268
AAAA 5 219 4 067 4 712
DS 4 917 3 778 4 289
MX 1 025 521 797
other 803 465 634
DNSKEY 761 541 631
TXT 613 297 468

Traffic flows – average distribution of QPS since 2026-09-18

Authoritative servers

Server analysis – daily QPS averages for queries reaching an authoritative server in a given city during the last 30 days before September 25, 2026

City Max QPS Min QPS Trend Average
Frankfurt am Main 14 602 6 676 8 569
Praha 7 088 5 168 6 282
Reston (VA) 7 467 4 384 5 793
Singapore 6 994 4 338 5 015
São Paulo 3 525 2 268 2 886
London 3 233 2 498 2 850
Tokyo 3 275 1 761 2 310
Wien 1 631 1 156 1 401
Johannesburg 1 371 941 1 112
Seattle (WA) 1 210 672 934
Bratislava 980 536 759
Stockholm 915 507 733
Kyiv 890 471 704
Sydney 1 382 275 526
Milano 752 178 513
Santiago de Chile 634 330 492
undisclosed 499 390 459
Los Angeles (CA) 699 332 451

Response code analysis – daily QPS averages for queries responded with a given RCODE during the last 30 days before September 25, 2026

RCODE Max QPS Min QPS Trend Average
NoError 45 322 31 803 37 467
NXDomain 11 386 3 192 4 257
Refused 71 2 21
ServFail 1 0 0
FormErr 1 0 0
NotImp 3 0 0
NotAuth 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 September 17, 2026)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 224 885 3 216 1 129 343 1 123
United States 439 605 4 178 412 482 3 311
other 295 416 8 624 263 924 5 184
Italy 267 099 227 264 153 51
Sweden 225 006 161 223 969 92
United Kingdom 197 507 324 167 010 126
Slovakia 151 962 335 154 210 76
Germany 139 855 2 215 77 003 894

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of September 17, 2026)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS14061 DigitalOcean, LLC 108 977 157 104 898 66
AS16509 Amazon.com, Inc.  302 239 2 282 286 711 2 075
AS208414 WEDOS Internet 281 581 11 281 571 9
AS24806 INTERNET CZ 237 662 131 233 298 42
AS25234 ACTIVE 24 190 198 5 190 198 5
AS29134 Webglobe 145 036 40 144 437 11
AS31034 Aruba 233 821 40 231 194 12
other other 1 258 229 16 614 967 082 8 637

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].