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: 2025-12-14 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-UN-DOMAINS 2 523 2 515 -8 2 521 179 71,00 37 6 616,7 % -2 -6 — OK View
REG-PIPNI 2 112 2 087 -25 2 099 149 70,99 5 4 125,0 % -6 -19 — OK View
Media4web 51 473 51 406 -67 51 460 3 133 60,88 348 353 98,6 % +32 -99 — OK Česká republika View
REG-TELE3 18 381 18 129 -252 18 235 1 103 60,49 13 55 23,6 % -154 -98 — OK View
REG-BANAN 3 105 3 087 -18 3 100 185 59,68 9 11 81,8 % -10 -8 — OK View
REG-KRAXNET 2 740 2 704 -36 2 721 162 59,54 1 1 100,0 % -12 -24 — OK View
REG-AERO-TRIP 2 148 2 154 +6 2 154 128 59,44 5 14 35,7 % -1 +7 71,4 % OK View
REG-OVH 4 736 4 707 -29 4 718 275 58,29 160 45 355,6 % +7 -36 — OK View
REG-IPMIRROR 5 944 5 922 -22 5 935 345 58,13 146 4 3 650,0 % -14 -8 — OK View
REG-NAMESHIELD 1 223 1 242 +19 1 232 69 56,03 12 7 171,4 % +19 +0 — OK View
Gigaserver 15 929 15 959 +30 15 941 890 55,83 46 108 42,6 % +0 +30 153,3 % OK Česká Republika View
REG-WEB4U 43 136 43 031 -105 43 096 2 393 55,53 101 194 52,1 % -49 -56 — OK View
REG-ASCIO 5 210 5 184 -26 5 193 286 55,08 165 32 515,6 % -4 -22 — OK View
regZone.cz 64 669 64 631 -38 64 664 3 468 53,63 259 291 89,0 % +7 -45 — OK Česká republika View
Webglobe 151 837 144 444 -7 393 150 561 7 998 53,12 1 075 1 366 78,7 % -7 643 +250 430,0 % OK Česká republika View
REG-ASPONE 1 752 1 753 +1 1 753 90 51,33 6 8 75,0 % +0 +1 600,0 % OK View
REG-MARKMONITOR 3 319 3 324 +5 3 320 170 51,20 14 3 466,7 % +8 -3 — OK View
REG-INTERNETX 4 373 4 357 -16 4 372 209 47,81 32 18 177,8 % +15 -31 — OK View
VEDOS 338 393 340 186 +1 793 339 416 16 067 47,34 2 683 3 663 73,2 % +561 +1 232 217,8 % OK Česká republika View
REG-NOMIQ 1 440 1 441 +1 1 440 68 47,22 16 1 1 600,0 % +4 -3 — OK View
Subreg 132 591 139 618 +7 027 133 891 6 220 46,46 575 1 211 47,5 % +7 327 -300 — OK Česká republika View
REG-WINSOFT 5 224 5 215 -9 5 218 242 46,38 5 23 21,7 % -12 +3 166,7 % OK View
REG-THINLINE 39 334 39 732 +398 39 526 1 803 45,62 473 654 72,3 % +41 +357 132,5 % OK View
Active 24 192 095 192 311 +216 192 211 8 623 44,86 911 1 683 54,1 % -252 +468 194,7 % OK Česká republika View
REG-GANDI 3 457 3 484 +27 3 471 153 44,07 80 50 160,0 % +15 +12 666,7 % OK View
REG-WEBSUPPORT 22 483 22 691 +208 22 586 971 42,99 312 453 68,9 % +9 +199 156,8 % OK View
REG-KEYSYSTEMS 16 998 17 275 +277 17 160 705 41,08 2 100 533 394,0 % +5 +272 772,1 % OK View
Forpsi 331 007 331 765 +758 331 431 13 186 39,79 907 2 501 36,3 % +156 +602 150,7 % OK Česká republika View
REG-OPENPROVIDER 6 294 6 170 -124 6 279 225 35,83 163 153 106,5 % +6 -130 — OK View
REG-SEZNAM 6 613 6 624 +11 6 625 219 33,05 93 91 102,2 % -14 +25 372,0 % OK View
REG-1API 18 158 17 688 -470 17 904 519 28,99 52 0 — -15 -455 — OK View
REG-NETIM 3 801 3 919 +118 3 852 94 24,40 71 148 48,0 % +7 +111 64,0 % OK View
REG-ONE 6 088 6 082 -6 6 084 126 20,71 0 2 0,0 % -5 -1 — OK View
REG-QUANTCOM 638 635 -3 637 72 113,01 0 0 — -1 -2 — Low base View
REG-VARIOMEDIA 145 138 -7 141 11 78,25 0 0 — -5 -2 — Low base View
REG-BARBERO 61 62 +1 61 4 65,16 0 0 — +0 +1 0,0 % Low base View
REG-SAFENAMES 720 719 -1 720 44 61,15 28 0 — +0 -1 — Low base View
REG-NEXUM 1 000 995 -5 997 52 52,14 7 2 350,0 % -1 -4 — Low base View
REG-MIRAMO 423 418 -5 420 21 49,96 0 0 — -2 -3 — Low base View
REG-CORE 499 498 -1 499 24 48,11 7 0 — +0 -1 — Low base View
REG-INSTRA 610 603 -7 605 21 34,69 6 0 — -1 -6 — Low base View
REG-LEXSYNERGY 63 65 +2 63 2 31,58 2 0 — +2 +0 — Low base View
REG-INWX 158 245 +87 203 5 24,68 24 59 40,7 % +15 +72 33,3 % Low base View
REG-DOMENESHOP 306 317 +11 313 3 9,60 11 10 110,0 % +1 +10 110,0 % Low base View
REG-CZNIC 293 293 +0 293 1 3,41 0 0 — +0 +0 — Low base View
REG-DOMAINPROFI 638 649 +11 643 2 3,11 25 33 75,8 % -33 +44 56,8 % 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 65 -8 70 0 0,00 0 0 — -1 -7 — Low base View

Windows are anchored to snapshot date 2025-12-14. “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).