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: 2025-06-162025-12-15 Window: 182 days Ranking
30d 90d 182d 365d
Domains (start → end)
133 220 → 139 520
ΔDomains: +6 300 · Market share (end): 9,192%
Retention (window)
45 519
Renewals / 1k avg domains: 342,47 (avg base: 132 914)
Retention vs last-year base
137 430
Avg domains (t−1y window) · Renewals / 1k prev-year avg: 331,22
Acquisition & interest
4 065
contact_create · domain_create: 7 790 · contact/domain_create: 52,2%
Migration & organic growth
+6 736
Net transfers (gain−loss) · Organic growth ≈ ΔDomains − net transfers: -436

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 7 790 73 +7 717
VEDOS 3 451 4 225 -774
Forpsi 391 682 -291
Active 24 249 122 +127
REG-OPENPROVIDER 10 59 -49
REG-WEBSUPPORT 60 12 +48
REG-THINLINE 45 84 -39
REG-DOMAINPROFI 35 0 +35
regZone.cz 34 65 -31
REG-TELE3 13 39 -26
REG-GANDI 6 28 -22
Media4web 75 57 +18
REG-THOSTING 14 0 +14
REG-NETIM 1 14 -13
REG-BANAN 11 1 +10
REG-KRAXNET 8 1 +7
REG-KEYSYSTEMS 7 14 -7
REG-WINSOFT 8 2 +6
REG-SEZNAM 9 4 +5
REG-IPMIRROR 0 4 -4
Gigaserver 15 11 +4
REG-ASPONE 0 3 -3
REG-PIPNI 3 0 +3
REG-MIRAMO 3 0 +3
REG-OVH 1 3 -2
REG-WEB4U 34 32 +2
REG-NOMIQ 0 2 -2
REG-ONE 3 1 +2
REG-INWX 0 2 -2
REG-AERO-TRIP 2 1 +1
REG-1API 6 5 +1
REG-ASCIO 1 2 -1
REG-NEXUM 1 0 +1
REG-NAMESHIELD 0 1 -1
REG-LEXSYNERGY 0 1 -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.