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

cz.w8.cz

Exploring data behind the .cz domain ecosystem

REG-WEB4U

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-WEB4U Range: 2025-06-142026-06-14 Window: 365 days Ranking
30d 90d 182d 365d
Domains (start → end)
43 508 → 42 683
ΔDomains: -825 · Market share (end): 2,727%
Retention (window)
17 444
Renewals / 1k avg domains: 405,19 (avg base: 43 051)
Retention vs last-year base
45 247
Avg domains (t−1y window) · Renewals / 1k prev-year avg: 385,53
Acquisition & interest
726
contact_create · domain_create: 1 512 · contact/domain_create: 48,0%
Migration & organic growth
-733
Net transfers (gain−loss) · Organic growth ≈ ΔDomains − net transfers: -92

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 40 398 -358
Subreg 57 222 -165
Forpsi 52 140 -88
Active 24 71 105 -34
REG-NAMESHIELD 0 23 -23
REG-THINLINE 11 33 -22
Media4web 15 36 -21
regZone.cz 2 21 -19
REG-KEYSYSTEMS 0 8 -8
REG-WEBSUPPORT 3 8 -5
Webglobe 86 81 +5
REG-THOSTING 5 0 +5
REG-KRAXNET 3 0 +3
REG-BANAN 2 0 +2
REG-OPENPROVIDER 1 3 -2
REG-TELE3 2 4 -2
REG-INTERNETX 2 0 +2
REG-IPMIRROR 1 0 +1
REG-1API 1 0 +1
REG-PIPNI 1 0 +1
REG-ONE 1 0 +1
REG-MARKMONITOR 0 1 -1
REG-CT 0 1 -1
Gigaserver 1 0 +1
REG-WINSOFT 0 1 -1
REG-GANDI 1 2 -1
REG-SEZNAM 3 4 -1
REG-ASCIO 0 1 -1
REG-ASPONE 0 1 -1
REG-MIRAMO 0 1 -1
REG-OVH 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.