DNS operator · Snapshot 23 October 2026
Sites on Xserver/Value-Domain DNS
243 measured sites rely on Xserver/Value-Domain DNS as their dns operator. How common it is by popularity band, how its customers configure related checks, and the continuity steps worth taking.
- Sites
- 243
- Median readiness index
- 53/100
- Profiles
- 39
<1% of all measured sites
all sites: 64
top-50K sites
Share by popularity band
| Chrome UX Report band | Share of measured sites | Sites |
|---|---|---|
| Top 1K | 0% | 0 |
| Top 5K | 0% | 0 |
| Top 10K | <1% | 1 |
| Top 50K | <1% | 43 |
| Top 100K | <1% | 39 |
| Top 500K | <1% | 44 |
| Top 1M | <1% | 116 |
Related checks among Xserver/Value-Domain DNS customers
| Check | Lane | Observed | All sites | Measured |
|---|---|---|---|---|
| Nameservers spread across providers | Recover | 0% | 11% | 243 |
| DNSSEC signed | Harden | 0% | 8.1% | 243 |
| CAA records limit who can issue certificates | Harden | <1% | 11% | 243 |
| Reachable over IPv6 | Enable | 3.7% | 44% | 243 |
| DMARC policy enforces quarantine or reject | Harden | 7.8% | 31% | 243 |
Continuity steps for Xserver/Value-Domain DNS customers
- Consider a secondary DNS operator. RFC 2182 recommends nameservers on diverse networks so a single failure cannot make the zone unreachable; many operators support zone transfers or multi-provider setups.
- Export the zone file after every change and keep it somewhere you can reach without the DNS provider's dashboard.
- Know where the registrar's nameserver settings are and who can change them, so delegation can be updated quickly.
- If you sign the zone with DNSSEC and add a second operator, plan signing so both serve consistent records.
RFC 2182: selection of secondary DNS serversStatus Is UP dependency continuity toolkit