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

cz.w8.cz

Exploring data behind the .cz domain ecosystem

Media4web

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-MEDIA4WEB Range: 2024-12-152025-12-15 Window: 365 days Ranking
30d 90d 182d 365d
Domains (start → end)
50 915 → 51 391
ΔDomains: +476 · Market share (end): 3,386%
Retention (window)
51 643
Renewals / 1k avg domains: 1 004,37 (avg base: 51 418)
Retention vs last-year base
50 581
Avg domains (t−1y window) · Renewals / 1k prev-year avg: 1 020,99
Acquisition & interest
5 824
contact_create · domain_create: 5 935 · contact/domain_create: 98,1%
Migration & organic growth
+222
Net transfers (gain−loss) · Organic growth ≈ ΔDomains − net transfers: +254 · contact/organic_growth: 2 292,9%

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
Active 24 285 135 +150
VEDOS 446 586 -140
REG-THINLINE 178 59 +119
REG-WEB4U 94 18 +76
REG-SEZNAM 46 9 +37
Subreg 113 139 -26
Forpsi 15 492 15 518 -26
Webglobe 188 173 +15
REG-KRAXNET 6 0 +6
REG-OPENPROVIDER 1 6 -5
regZone.cz 53 48 +5
REG-BANAN 6 3 +3
REG-PIPNI 3 0 +3
Gigaserver 13 10 +3
REG-NEXUM 4 1 +3
REG-WINSOFT 1 3 -2
REG-THOSTING 2 0 +2
REG-QUANTCOM 0 1 -1
REG-1API 3 2 +1
REG-GANDI 1 2 -1
REG-WEBSUPPORT 20 21 -1
REG-MIRAMO 1 0 +1
REG-KEYSYSTEMS 2 2 +0
REG-ASPONE 1 1 +0
REG-AERO-TRIP 2 2 +0
REG-NETIM 1 1 +0
REG-ASCIO 1 1 +0
REG-ONE 1 1 +0
REG-TELE3 4 4 +0

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