.crown

TLD SLA Compliance Monitoring

TLD SLA Compliance Metrics

Spec 10

DNS

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 16ms 34ms 72
7d 100% 100% 17ms 120ms 1728
30d 94.98% 94.98% 17ms 120ms 2360

RDAP

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 45ms 57ms 16
7d 100% 100% 45ms 77ms 220
30d 100% 100% 48ms 85ms 300

DNSSEC Validation Metrics

Registry Agreement Spec 6

DNSSEC is required by the Registry Agreement (Specification 6) but is not part of the Spec 10 SLA. We monitor DNSSEC validation independently.

Period Validation Rate RTT p50 RTT p95 Checks Status
24h 100% 29ms 29ms 12
7d 100% 29ms 29ms 196
30d 100% 29ms 29ms 280

Unlike Spec 10 services, DNSSEC has no formal availability SLA. Thresholds shown are operational guidelines.

Current Check Status

Reported by Any53 Probes
Type AF RTT Last Check Source Details Status TSLAC
DNS v4 11ms 1 hour ago local NSID: YYZ2 OK
DNS v6 11ms 1 hour ago local NSID: YYZ1 OK
DNSSEC v4 30ms 2 hours, 9 minutes ago local Key: 42101 OK
DNSSEC v6 29ms 2 hours, 9 minutes ago local Key: 42101 OK
RDAP v4 60ms 2 hours, 40 minutes ago local TLS 1.3 OK
RDAP v6 50ms 2 hours, 40 minutes ago local TLS 1.3 OK

RDAP HTTPS Timing

50ms total
DNS Lookup
—
TCP Connect
11ms
TLS Handshake
22ms
Time to First Byte
49ms

TLS 1.3 / TLS_AES_128_GCM_SHA256

Nameservers

8 IPs tested
Hostname IP Address AF Status
a.ns.nic.crown 185.159.197.5 v4
a.ns.nic.crown 2620:10a:80aa::5 v6
b.ns.nic.crown 185.159.198.5 v4
b.ns.nic.crown 2620:10a:80ab::5 v6
c.ns.nic.crown 45.142.220.101 v4
c.ns.nic.crown 2a0e:dbc0::101 v6
d.ns.nic.crown 185.159.199.5 v4
d.ns.nic.crown 2620:10a:80ac::5 v6

Per ICANN Spec 10, we test all delegated nameserver IPs independently.

Test With Your Computer

DNS

dig @a.ns.nic.crown crown. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID
drill -D crown. SOA @a.ns.nic.crown Alternative using drill with DNSSEC trace

RDAP

curl -sS "https://rdap.crown.fury.ca/rdap/domain/nic.crown" | jq . Fetch RDAP JSON (positive lookup)
curl -I -sS "https://rdap.crown.fury.ca/rdap/domain/nic.crown" Headers only (check TLS, timing)
Open in Browser View RDAP response directly

Registry Information

Active
TLD .crown
Operator Crown Equipment Corporation
RDAP Server https://rdap.crown.fury.ca/rdap/ RDAP Client

ICANN SLA Requirements

Per ICANN Registry Agreement Specification 10:

DNS SLA UDP RTT ≤ 500ms for 95% of queries. Availability: 99% (max 432 min/month downtime).
RDAP SLA RTT ≤ 4000ms for 95% of queries. Availability: 98% (max 864 min/month downtime).

API Access

JSON API

Access .crown compliance metrics programmatically via our REST API.

Quick Start

GET /any53/api/v1/compliance/crown/ 
curl -H "X-API-Key: ${YOUR_API_KEY}" \
  "https://www.any53.com/any53/api/v1/compliance/crown/"

Example Response

{
  "tld": "crown",
  "display_name": ".crown",
  "operator": "Crown Equipment Corporation",
  "updated_at": "2026-01-31T12:00:00Z",
  "dns": {
    "availability_24h": 99.99,
    "rtt_p50_ms": 12,
    "rtt_p95_ms": 42,
    "sla_threshold_ms": 500
  },
  "rdds": {
    "protocol": "RDAP",
    "availability_24h": 99.95,
    "rtt_p50_ms": 180,
    "rtt_p95_ms": 412,
    "sla_threshold_ms": 4000
  },
  "servers": {
    "rdap_url": "https://rdap.crown.fury.ca/rdap/"
  },
  "spec10_compliant": true
}

Generate API Key

Get a free API key to start making requests. Provide an email to upgrade to the verified tier (600 requests/hour).

Endpoints

Endpoint Description Tier
GET /compliance/ List all monitored TLDs All
GET /compliance/{tld}/ Current metrics for a TLD All
GET /compliance/{tld}/history/ Historical time-series data Organization
GET /compliance/{tld}/probes/ Per-probe breakdown Organization
POST /compliance/keys/ Generate a new API key No auth

Rate Limits

Tier Rate Limit Features
Anonymous 100/hour Current snapshot, hourly aggregates
Verified 600/hour Current snapshot, hourly aggregates
Organization 6000/hour Historical data, per-minute resolution, per-probe breakdown

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