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: 2025-09-162025-12-15 Window: 90 days Ranking
30d 90d 182d 365d
Domains (start → end)
133 045 → 139 520
ΔDomains: +6 475 · Market share (end): 9,192%
Retention (window)
22 398
Renewals / 1k avg domains: 168,14 (avg base: 133 210)
Retention vs last-year base
137 138
Avg domains (t−1y window) · Renewals / 1k prev-year avg: 163,32
Acquisition & interest
1 942
contact_create · domain_create: 3 813 · contact/domain_create: 50,9%
Migration & organic growth
+6 511
Net transfers (gain−loss) · Organic growth ≈ ΔDomains − net transfers: -36

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 7 652 36 +7 616
VEDOS 955 1 848 -893
Forpsi 247 460 -213
Active 24 96 72 +24
REG-DOMAINPROFI 22 0 +22
REG-WEBSUPPORT 23 3 +20
regZone.cz 19 36 -17
REG-GANDI 3 18 -15
REG-NETIM 0 11 -11
REG-THINLINE 28 38 -10
REG-WEB4U 16 25 -9
Media4web 31 39 -8
REG-BANAN 7 0 +7
REG-THOSTING 6 0 +6
REG-KEYSYSTEMS 4 10 -6
REG-WINSOFT 8 2 +6
Gigaserver 4 8 -4
REG-NOMIQ 0 2 -2
REG-KRAXNET 2 0 +2
REG-INWX 0 2 -2
REG-ONE 2 0 +2
REG-ASCIO 1 2 -1
REG-NEXUM 1 0 +1
REG-MIRAMO 1 0 +1
REG-TELE3 10 11 -1
REG-LEXSYNERGY 0 1 -1
REG-PIPNI 1 0 +1
REG-ASPONE 0 1 -1
REG-MARKMONITOR 0 1 -1
REG-AERO-TRIP 0 1 -1
REG-OVH 1 2 -1
REG-OPENPROVIDER 4 4 +0
REG-SEZNAM 2 2 +0
REG-1API 2 2 +0

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