.cpa

TLD SLA Compliance Monitoring

TLD SLA Compliance Metrics

Spec 10

DNS

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 4.0ms 22ms 120
7d 93.16% 93.16% 4.0ms 20ms 702
30d 98.65% 98.65% 4.0ms 138ms 4008

RDAP

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 166ms 198ms 40
7d 94.64% 94.64% 156ms 450ms 224
30d 99.10% 99.10% 166ms 246ms 1328

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% 36ms 39ms 44
7d 90.00% 199ms 537ms 240
30d 97.99% 66ms 202ms 1344

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 1.3ms 31 minutes ago local NSID: Auth_Host1.Chicago_Node1 OK
DNS v6 1.3ms 205 days, 14 hours ago local NSID: Auth_Host1.Chicago_Node1 OK
DNSSEC v4 39ms 29 minutes ago local Key: 6397 OK
DNSSEC v6 36ms 29 minutes ago local Key: 6397 OK
RDAP v4 174ms 1 hour, 41 minutes ago local TLS 1.3 OK
RDAP v6 159ms 1 hour, 41 minutes ago local TLS 1.3 OK

RDAP HTTPS Timing

159ms total
DNS Lookup
0.37ms
TCP Connect
49ms
TLS Handshake
55ms
Time to First Byte
158ms

TLS 1.3 / TLS_AES_128_GCM_SHA256

Nameservers

6 IPs tested
Hostname IP Address AF ASN RPKI Status
a.nic.cpa 37.209.192.9 v4 AS397213
b.nic.cpa 37.209.194.9 v4 AS12008
c.nic.cpa 37.209.196.9 v4 AS12008
x.nic.cpa 156.154.172.82 v4 AS12008
y.nic.cpa 156.154.173.82 v4 AS12008
z.nic.cpa 156.154.174.82 v4 AS12008

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

Test With Your Computer

DNS

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

RDAP

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

Registry Information

Active
TLD .cpa
Operator American Institute of Certified Public Accountants
RDAP Server https://rdap.nic.cpa/ 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 .cpa compliance metrics programmatically via our REST API.

Quick Start

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

Example Response

{
  "tld": "cpa",
  "display_name": ".cpa",
  "operator": "American Institute of Certified Public Accountants",
  "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.nic.cpa/"
  },
  "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

Enter a TLD name or IDN code • Browse all TLDs