.cal

TLD SLA Compliance Monitoring

TLD SLA Compliance Metrics

Spec 10

DNS

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 38ms 144ms 80
7d 100% 100% 38ms 226ms 1220
30d 91.23% 91.23% 38ms 226ms 1598

RDAP

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 45ms 92ms 16
7d 100% 99.53% 53ms 330ms 212
30d 100% 99.67% 63ms 350ms 304

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% 56ms 57ms 10
7d 99.07% 56ms 56ms 214
30d 99.36% 56ms 56ms 312

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 30 minutes ago local — OK
DNS v6 11ms 30 minutes ago local — OK
DNSSEC v4 57ms 36 minutes ago local Key: 18550 OK
DNSSEC v6 58ms 36 minutes ago local Key: 18550 OK
RDAP v4 37ms 15 minutes ago local TLS 1.3 OK
RDAP v6 46ms 15 minutes ago local TLS 1.3 OK

RDAP HTTPS Timing

46ms total
DNS Lookup
—
TCP Connect
1.0ms
TLS Handshake
7.0ms
Time to First Byte
45ms

TLS 1.3 / TLS_AES_128_GCM_SHA256

Nameservers

10 IPs tested
Hostname IP Address AF Status
ns-tld1.charlestonroadregistry.com 216.239.32.105 v4
ns-tld1.charlestonroadregistry.com 2001:4860:4802:32::69 v6
ns-tld2.charlestonroadregistry.com 216.239.34.105 v4
ns-tld2.charlestonroadregistry.com 2001:4860:4802:34::69 v6
ns-tld3.charlestonroadregistry.com 216.239.36.105 v4
ns-tld3.charlestonroadregistry.com 2001:4860:4802:36::69 v6
ns-tld4.charlestonroadregistry.com 216.239.38.105 v4
ns-tld4.charlestonroadregistry.com 2001:4860:4802:38::69 v6
ns-tld5.charlestonroadregistry.com 216.239.60.105 v4
ns-tld5.charlestonroadregistry.com 2001:4860:4805::69 v6

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

Test With Your Computer

DNS

dig @ns-tld1.charlestonroadregistry.com cal. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID
drill -D cal. SOA @ns-tld1.charlestonroadregistry.com Alternative using drill with DNSSEC trace

RDAP

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

Registry Information

Active
TLD .cal
Operator Charleston Road Registry Inc.
RDAP Server https://pubapi.registry.google/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 .cal compliance metrics programmatically via our REST API.

Quick Start

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

Example Response

{
  "tld": "cal",
  "display_name": ".cal",
  "operator": "Charleston Road Registry Inc.",
  "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://pubapi.registry.google/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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