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: 2025-06-162025-12-15 Window: 182 days Ranking
30d 90d 182d 365d
Domains (start → end)
326 281 → 331 827
ΔDomains: +5 546 · Market share (end): 21,861%
Retention (window)
101 472
Renewals / 1k avg domains: 308,69 (avg base: 328 718)
Retention vs last-year base
319 683
Avg domains (t−1y window) · Renewals / 1k prev-year avg: 317,41
Acquisition & interest
6 365
contact_create · domain_create: 17 219 · contact/domain_create: 37,0%
Migration & organic growth
+918
Net transfers (gain−loss) · Organic growth ≈ ΔDomains − net transfers: +4 628 · contact/organic_growth: 137,5%

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
VEDOS 360 1 031 -671
Active 24 612 223 +389
REG-THOSTING 379 0 +379
Subreg 682 391 +291
REG-TELE3 171 33 +138
regZone.cz 222 87 +135
Gigaserver 123 14 +109
Webglobe 311 227 +84
REG-WEB4U 85 20 +65
REG-WINSOFT 45 3 +42
REG-THINLINE 78 106 -28
REG-KEYSYSTEMS 2 30 -28
REG-WEBSUPPORT 16 40 -24
REG-PIPNI 16 2 +14
REG-1API 11 0 +11
REG-SEZNAM 17 10 +7
REG-BANAN 11 4 +7
REG-NAMESHIELD 0 6 -6
REG-NOMIQ 0 4 -4
REG-INTERNETX 3 7 -4
REG-ONE 4 0 +4
REG-ASCIO 7 3 +4
REG-MIRAMO 3 0 +3
Media4web 4 692 4 689 +3
REG-GANDI 3 0 +3
REG-OPENPROVIDER 4 7 -3
REG-ASPONE 0 2 -2
REG-KRAXNET 3 1 +2
REG-IPMIRROR 0 2 -2
REG-AERO-TRIP 3 1 +2
REG-INSTRA 1 0 +1
REG-NEXUM 0 1 -1
REG-OVH 1 2 -1
REG-MARKMONITOR 0 1 -1
REG-NETIM 0 1 -1
REG-QUANTCOM 1 0 +1

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