.cars

TLD SLA Compliance Monitoring

TLD SLA Compliance Metrics

Spec 10

DNS

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 26ms 37ms 88
7d 100% 100% 26ms 54ms 1792
30d 95.74% 95.74% 24ms 54ms 2361

RDAP

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 397ms 442ms 12
7d 100% 100% 400ms 432ms 216
30d 100% 100% 402ms 438ms 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% 53ms 54ms 12
7d 100% 52ms 54ms 216
30d 100% 49ms 51ms 304

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 18ms 27 minutes ago local NSID: WVQS-AQ5DSO-L6ZRS7 OK
DNS v6 18ms 27 minutes ago local NSID: WVQS-AQ5DSO-L6ZRS7 OK
DNSSEC v4 55ms 55 minutes ago local Key: 44409 OK
DNSSEC v6 53ms 55 minutes ago local Key: 44409 OK
RDAP v4 414ms 39 minutes ago local TLS 1.2 OK
RDAP v6 418ms 39 minutes ago local TLS 1.2 OK

RDAP HTTPS Timing

418ms total
DNS Lookup
—
TCP Connect
94ms
TLS Handshake
192ms
Time to First Byte
418ms

TLS 1.2 / TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256

Nameservers

8 IPs tested
Hostname IP Address AF Status
a.nic.cars 194.169.218.129 v4
a.nic.cars 2001:67c:13cc::1:129 v6
b.nic.cars 185.24.64.129 v4
b.nic.cars 2a04:2b00:13cc::1:129 v6
c.nic.cars 212.18.248.129 v4
c.nic.cars 2a04:2b00:13ee::129 v6
d.nic.cars 212.18.249.129 v4
d.nic.cars 2a04:2b00:13ff::129 v6

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

Test With Your Computer

DNS

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

RDAP

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

Registry Information

Active
TLD .cars
Operator XYZ.COM LLC
RDAP Server https://rdap.centralnic.com/cars/ 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 .cars compliance metrics programmatically via our REST API.

Quick Start

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

Example Response

{
  "tld": "cars",
  "display_name": ".cars",
  "operator": "XYZ.COM LLC",
  "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.centralnic.com/cars/"
  },
  "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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