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

cz.w8.cz

Exploring data behind the .cz domain ecosystem

Forpsi

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-INTERNET-CZ Range: 2025-11-152025-12-15 Window: 30 days Ranking
30d 90d 182d 365d
Domains (start → end)
330 997 → 331 827
ΔDomains: +830 · Market share (end): 21,861%
Retention (window)
12 553
Renewals / 1k avg domains: 37,87 (avg base: 331 458)
Retention vs last-year base
321 401
Avg domains (t−1y window) · Renewals / 1k prev-year avg: 39,06
Acquisition & interest
873
contact_create · domain_create: 2 395 · contact/domain_create: 36,5%
Migration & organic growth
+161
Net transfers (gain−loss) · Organic growth ≈ ΔDomains − net transfers: +669 · contact/organic_growth: 130,5%

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
REG-TELE3 150 2 +148
VEDOS 62 175 -113
Active 24 131 33 +98
Subreg 30 61 -31
Webglobe 75 53 +22
REG-WINSOFT 15 1 +14
REG-WEB4U 14 1 +13
Media4web 804 795 +9
regZone.cz 22 13 +9
REG-OPENPROVIDER 0 5 -5
REG-BANAN 4 0 +4
REG-WEBSUPPORT 7 11 -4
REG-PIPNI 3 0 +3
REG-THINLINE 7 9 -2
REG-IPMIRROR 0 2 -2
REG-ASPONE 0 1 -1
REG-MIRAMO 1 0 +1
Gigaserver 2 3 -1
REG-ONE 1 0 +1
REG-1API 1 0 +1
REG-SEZNAM 1 2 -1
REG-NOMIQ 0 1 -1
REG-ASCIO 1 2 -1

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