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

cz.w8.cz

Exploring data behind the .cz domain ecosystem

REG-1API

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-1API Range: 2024-12-152025-12-15 Window: 365 days Ranking
30d 90d 182d 365d
Domains (start → end)
22 556 → 17 680
ΔDomains: -4 876 · Market share (end): 1,165%
Retention (window)
9 068
Renewals / 1k avg domains: 437,52 (avg base: 20 726)
Retention vs last-year base
22 217
Avg domains (t−1y window) · Renewals / 1k prev-year avg: 408,16
Acquisition & interest
52 842
contact_create · domain_create: 2 228 · contact/domain_create: 2 371,7%
Migration & organic growth
-226
Net transfers (gain−loss) · Organic growth ≈ ΔDomains − net transfers: -4 650

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-KEYSYSTEMS 3 45 -42
regZone.cz 12 51 -39
REG-BARBERO 0 38 -38
VEDOS 8 25 -17
REG-OPENPROVIDER 2 18 -16
REG-NETIM 4 16 -12
Active 24 7 17 -10
REG-OVH 0 10 -10
REG-ASCIO 2 11 -9
Subreg 19 11 +8
Forpsi 6 14 -8
REG-GANDI 2 9 -7
REG-INTERNETX 3 9 -6
Webglobe 4 10 -6
REG-THINLINE 3 7 -4
REG-MARKMONITOR 0 3 -3
REG-NOMIQ 0 3 -3
REG-TELE3 0 2 -2
REG-UN-DOMAINS 3 1 +2
REG-WINSOFT 1 0 +1
REG-SEZNAM 2 1 +1
REG-DYNADOT 0 1 -1
REG-IPMIRROR 4 5 -1
Media4web 2 3 -1
Gigaserver 0 1 -1
REG-DOMAINPROFI 1 0 +1
REG-INSTRA 0 1 -1
REG-NAMESHIELD 0 1 -1
REG-WEBSUPPORT 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.