Experimental project · Data source: CZ.NIC · Non-commercial

cz.w8.cz

Exploring data behind the .cz domain ecosystem

Registrar ranking

Retention is represented by domain_renew and normalized by the average daily domain base within the selected window. Acquisition/first-choice is proxied by contact_create.

Snapshot: 2025-12-15 Window: 30 days Low-base threshold: 1 000 avg domains Statistics Domains & ops
30d 90d 182d 365d
Sort: Renewals / 1k avg domains domain_renew (total) contact_create domain_create (attempts) contact/domain_create (%) contact/organic_growth (%) Domains (end) ΔDomains (start→end) Net transfers (gain-loss) Organic growth (Δ - net transfers) Avg domains (window)

Metric definitions (window-based)

Renewals / 1k avg domains normalizes the renewal flow by the average daily domain base: ( Σ(domain_renew_window) / avg(domains_window) ) × 1000. This reduces distortions when the domain base changes abruptly (bulk transfers, acquisitions, migrations).

contact_create / domain_create (%) is shown as a rough “first-customer intensity” proxy, but it can exceed 100% because contact_create is not necessarily tied 1:1 to domain_create (e.g., pre-created contacts, API bulk onboarding, contacts for other workflows). For a more defensible denominator we also show Organic growth ≈ ΔDomains − Net transfers.

Ranking (window: 30 days)

Registrar Domains (start) Domains (end) ΔDomains Avg domains (window) domain_renew Renewals / 1k avg
domains		 contact_create domain_create (attempts) contact
/ domain_create
(%)		 Net transfers Organic growth contact
/ organic_growth
(%)		 Base Country Details
REG-PIPNI 2 112 2 087 -25 2 098 149 71,02 5 4 125,0 % -6 -19 — OK View
REG-UN-DOMAINS 2 523 2 515 -8 2 521 174 69,02 36 6 600,0 % -2 -6 — OK View
REG-BANAN 3 104 3 087 -17 3 099 183 59,04 8 10 80,0 % -9 -8 — OK View
REG-AERO-TRIP 2 148 2 154 +6 2 154 125 58,04 5 14 35,7 % -1 +7 71,4 % OK View
Media4web 51 456 51 391 -65 51 457 2 981 57,93 330 336 98,2 % +23 -88 — OK Česká republika View
REG-KRAXNET 2 737 2 704 -33 2 720 157 57,73 1 1 100,0 % -12 -21 — OK View
REG-OVH 4 735 4 707 -28 4 717 266 56,39 148 41 361,0 % +7 -35 — OK View
REG-IPMIRROR 5 944 5 923 -21 5 934 330 55,61 142 3 4 733,3 % -13 -8 — OK View
REG-TELE3 18 379 18 121 -258 18 227 1 011 55,47 12 53 22,6 % -157 -101 — OK View
REG-WEB4U 43 136 43 022 -114 43 092 2 282 52,96 98 186 52,7 % -51 -63 — OK View
REG-ASCIO 5 207 5 182 -25 5 192 267 51,43 151 29 520,7 % -4 -21 — OK View
regZone.cz 64 672 64 629 -43 64 662 3 304 51,10 246 275 89,5 % +10 -53 — OK Česká republika View
Webglobe 151 835 144 442 -7 393 150 322 7 599 50,55 1 035 1 306 79,2 % -7 655 +262 395,0 % OK Česká republika View
REG-ASPONE 1 752 1 754 +2 1 753 87 49,62 6 8 75,0 % +0 +2 300,0 % OK View
REG-MARKMONITOR 3 319 3 324 +5 3 320 164 49,39 13 3 433,3 % +8 -3 — OK View
Gigaserver 15 925 15 956 +31 15 942 781 48,99 42 105 40,0 % +1 +30 140,0 % OK Česká Republika View
REG-NAMESHIELD 1 221 1 243 +22 1 232 60 48,69 12 7 171,4 % +20 +2 600,0 % OK View
REG-NOMIQ 1 440 1 441 +1 1 440 67 46,52 16 1 1 600,0 % +4 -3 — OK View
REG-INTERNETX 4 373 4 356 -17 4 371 203 46,44 29 18 161,1 % +15 -32 — OK View
VEDOS 338 400 340 347 +1 947 339 479 15 298 45,06 2 575 3 515 73,3 % +577 +1 370 188,0 % OK Česká republika View
Subreg 132 551 139 520 +6 969 134 114 5 842 43,56 540 1 171 46,1 % +7 336 -367 — OK Česká republika View
REG-THINLINE 39 331 39 734 +403 39 539 1 720 43,50 447 626 71,4 % +39 +364 122,8 % OK View
REG-WINSOFT 5 224 5 215 -9 5 217 222 42,55 5 23 21,7 % -11 +2 250,0 % OK View
Active 24 192 092 192 307 +215 192 218 8 095 42,11 861 1 602 53,7 % -261 +476 180,9 % OK Česká republika View
REG-GANDI 3 458 3 483 +25 3 472 144 41,47 72 44 163,6 % +15 +10 720,0 % OK View
REG-WEBSUPPORT 22 488 22 700 +212 22 593 915 40,50 301 434 69,4 % +12 +200 150,5 % OK View
REG-KEYSYSTEMS 16 994 17 284 +290 17 169 671 39,08 2 032 512 396,9 % +7 +283 718,0 % OK View
Forpsi 330 997 331 827 +830 331 458 12 553 37,87 873 2 395 36,5 % +161 +669 130,5 % OK Česká republika View
REG-OPENPROVIDER 6 298 6 192 -106 6 276 221 35,22 148 146 101,4 % +4 -110 — OK View
REG-SEZNAM 6 620 6 629 +9 6 626 208 31,39 92 91 101,1 % -13 +22 418,2 % OK View
REG-1API 18 150 17 680 -470 17 888 496 27,73 52 0 — -15 -455 — OK View
REG-NETIM 3 800 3 914 +114 3 856 91 23,60 70 146 47,9 % +7 +107 65,4 % OK View
REG-ONE 6 088 6 088 +0 6 084 124 20,38 0 2 0,0 % -5 +5 0,0 % OK View
REG-QUANTCOM 638 635 -3 637 71 111,46 0 0 — -1 -2 — Low base View
REG-VARIOMEDIA 145 138 -7 140 11 78,37 0 0 — -5 -2 — Low base View
REG-BARBERO 61 62 +1 61 4 65,13 0 0 — +0 +1 0,0 % Low base View
REG-SAFENAMES 720 719 -1 720 43 59,76 28 0 — +0 -1 — Low base View
REG-NEXUM 1 000 994 -6 997 52 52,15 7 2 350,0 % -1 -5 — Low base View
REG-MIRAMO 423 418 -5 420 21 49,98 0 0 — -2 -3 — Low base View
REG-CORE 499 498 -1 499 24 48,12 7 0 — +0 -1 — Low base View
REG-INSTRA 610 603 -7 605 20 33,05 6 0 — -1 -6 — Low base View
REG-LEXSYNERGY 63 65 +2 63 2 31,55 2 0 — +2 +0 — Low base View
REG-INWX 158 249 +91 206 5 24,33 24 58 41,4 % +17 +74 32,4 % Low base View
REG-DOMENESHOP 306 317 +11 313 3 9,59 10 9 111,1 % +0 +11 90,9 % Low base View
REG-CZNIC 293 293 +0 293 1 3,41 0 0 — +0 +0 — Low base View
REG-DOMAINPROFI 638 642 +4 643 2 3,11 25 33 75,8 % -39 +43 58,1 % Low base View
REG-CT 971 971 +0 971 0 0,00 0 0 — +0 +0 — Low base View
REG-DYNADOT 285 285 +0 285 0 0,00 0 0 — +0 +0 — Low base View
REG-THOSTING 73 64 -9 70 0 0,00 0 0 — -1 -8 — Low base View

Windows are anchored to snapshot date 2025-12-15. “Domains (start)” uses the first available day inside the selected window. “Organic growth” is an approximation: ΔDomains − Net transfers (captures net registrations minus deletions, excluding migration).