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

cz.w8.cz

Exploring data behind the .cz domain ecosystem

Subreg

Registrar profile focusing on retention (domain_renew), acquisition/onboarding (contact_create), and migration (transfers). All calculations are anchored to the selected date range.

Registrar ID: REG-GRANSY Range: 2025-06-142026-06-14 Window: 365 days Ranking
30d 90d 182d 365d
Domains (start → end)
133 270 → 152 310
ΔDomains: +19 040 · Market share (end): 9,730%
Retention (window)
45 823
Renewals / 1k avg domains: 330,63 (avg base: 138 595)
Retention vs last-year base
137 378
Avg domains (t−1y window) · Renewals / 1k prev-year avg: 333,55
Acquisition & interest
4 092
contact_create · domain_create: 7 836 · contact/domain_create: 52,2%
Migration & organic growth
+11 091
Net transfers (gain−loss) · Organic growth ≈ ΔDomains − net transfers: +7 949 · contact/organic_growth: 51,5%

Interpretation notes

domain_renew is treated as the strongest observable proxy for retention (customers paying to keep domains). domain_create is interpreted as attempts/interest rather than confirmed purchases. Transfer flows are used to decompose domain base changes: ΔDomains ≈ organic_growth + net_transfers, where organic_growth ≈ ΔDomains − net_transfers.

Domains over time

Absolute daily domain count attributed to the registrar (stock variable from daily_stats). Step changes often indicate portfolio migration or acquisition.

Market share over time

Daily market share (%) = registrar domains / total .cz domains. Normalizes out overall market growth.

Retention signal: domain_renew (daily)

Daily renewal operations (flow). Aggregates to window totals and supports renewal-intensity comparisons.

Acquisition vs interest (daily): contact_create vs domain_create

contact_create approximates onboarding/new customer objects; domain_create captures attempts/interest. Ratios may exceed 100% due to decoupling (pre-created contacts, reuse, API workflows).

Transfers: gain / loss / net

Migration signal based on registrar-to-registrar moves. Loss is negative; net = gain − loss.

Daily change (first difference): ΔDomains(t)

ΔDomains(t) = Domains(t) − Domains(t−1). Highlights shocks, step changes, and high-volatility periods.

Monthly renewal share vs last-year domain base (100% stacked)

For each month, we compare domain_renew to the registrar’s average domain base in the same calendar month one year earlier. The stacked view estimates “renewed” vs “not renewed” share relative to that last-year base (capped at base for visualization). Important: this does not account for multi-year renewals (renewing for multiple years reduces observable renewal operations later), therefore this is a comparative proxy, not a true renewal rate.

Monthly: Renewals / last-year base (%)

Renewal intensity expressed as percent of last-year monthly base: 100 × domain_renew_month / avg(domains_month_(t−1y)). Can exceed 100% due to operational effects (including multi-year renewals and data decoupling).

Transfer counterparties (competitor matrix)

Competitor Incoming Outgoing Net
Webglobe 8 240 179 +8 061
VEDOS 9 176 7 005 +2 171
Active 24 685 255 +430
REG-TELE3 483 70 +413
Forpsi 781 1 025 -244
REG-WEB4U 222 57 +165
REG-DOMAINPROFI 118 0 +118
regZone.cz 121 215 -94
REG-WEBSUPPORT 120 49 +71
REG-OPENPROVIDER 19 79 -60
Media4web 126 92 +34
REG-THINLINE 123 152 -29
REG-KEYSYSTEMS 13 37 -24
Gigaserver 36 15 +21
REG-BANAN 20 1 +19
REG-WINSOFT 17 2 +15
REG-THOSTING 14 0 +14
REG-KRAXNET 13 2 +11
REG-NETIM 40 47 -7
REG-1API 12 5 +7
REG-IPMIRROR 0 6 -6
REG-SEZNAM 19 13 +6
REG-PIPNI 6 0 +6
REG-INWX 0 5 -5
REG-NAMESHIELD 0 3 -3
REG-MIRAMO 3 0 +3
REG-ONE 5 2 +3
REG-AERO-TRIP 5 2 +3
REG-ASCIO 2 4 -2
REG-DYNADOT 1 3 -2
REG-NOMIQ 0 2 -2
REG-ASPONE 3 5 -2
REG-INTERNETX 2 0 +2
REG-INSTRA 2 0 +2
REG-QUANTCOM 0 1 -1
REG-NEXUM 1 0 +1
REG-LEXSYNERGY 0 1 -1
REG-CT 0 1 -1
REG-OVH 2 3 -1
REG-GANDI 30 31 -1
REG-MARKMONITOR 1 1 +0

Aggregated registrar-to-registrar transfer flows within the selected window. Positive net indicates dominance of inflow from that competitor; negative indicates outflow.