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

cz.w8.cz

Exploring data behind the .cz domain ecosystem

Subreg

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-GRANSY Range: 2025-12-142026-06-14 Window: 181 days Ranking
30d 90d 182d 365d
Domains (start → end)
139 618 → 152 310
ΔDomains: +12 692 · Market share (end): 9,730%
Retention (window)
0
Renewals / 1k avg domains: 0,00 (avg base: 144 344)
Retention vs last-year base
137 389
Avg domains (t−1y window) · Renewals / 1k prev-year avg: 0,00
Acquisition & interest
0
contact_create · domain_create: 0
Migration & organic growth
+4 280
Net transfers (gain−loss) · Organic growth ≈ ΔDomains − net transfers: +8 412 · contact/organic_growth: 0,0%

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 5 727 2 863 +2 864
REG-TELE3 470 31 +439
Webglobe 454 107 +347
Active 24 435 133 +302
REG-WEB4U 189 25 +164
REG-DOMAINPROFI 83 0 +83
regZone.cz 87 150 -63
Forpsi 394 344 +50
REG-WEBSUPPORT 60 37 +23
REG-GANDI 24 3 +21
REG-KEYSYSTEMS 6 24 -18
Gigaserver 21 4 +17
Media4web 52 35 +17
REG-OPENPROVIDER 9 20 -11
REG-THINLINE 78 69 +9
REG-WINSOFT 9 0 +9
REG-BANAN 9 0 +9
REG-NETIM 39 33 +6
REG-1API 6 0 +6
REG-KRAXNET 5 1 +4
REG-PIPNI 3 0 +3
REG-INWX 0 3 -3
REG-INTERNETX 2 0 +2
REG-NAMESHIELD 0 2 -2
REG-AERO-TRIP 3 1 +2
REG-DYNADOT 1 3 -2
REG-INSTRA 2 0 +2
REG-IPMIRROR 0 2 -2
REG-SEZNAM 10 8 +2
REG-CT 0 1 -1
REG-ONE 2 1 +1
REG-ASPONE 3 2 +1
REG-OVH 1 0 +1
REG-QUANTCOM 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.