.icu

TLD SLA Compliance Monitoring

TLD SLA Compliance Metrics

Spec 10

DNS

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 92ms 231ms 176
7d 99.17% 99.17% 92ms 232ms 956
30d 99.75% 99.75% 55ms 232ms 3236

RDAP

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 423ms 495ms 24
7d 100% 100% 424ms 620ms 120
30d 100% 99.76% 431ms 649ms 412

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% 45ms 90ms 44
7d 100% 43ms 88ms 240
30d 99.75% 43ms 120ms 812

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 18 minutes ago local NSID: WVQS-AQ5DSO-L6ZRS7 OK
DNS v6 18ms 161 days, 6 hours ago local NSID: WVQS-AQ5DSO-L6ZRS7 OK
DNSSEC v4 86ms 22 minutes ago local Key: 46625 OK
DNSSEC v6 41ms 22 minutes ago local Key: 46625 OK
RDAP v4 424ms 3 hours, 19 minutes ago local TLS 1.2 OK
RDAP v6 417ms 3 hours, 19 minutes ago local TLS 1.2 OK

RDAP HTTPS Timing

417ms total
DNS Lookup
0.50ms
TCP Connect
95ms
TLS Handshake
195ms
Time to First Byte
417ms

TLS 1.2 / TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256

Nameservers

4 IPs tested
Hostname IP Address AF ASN RPKI Status
a.nic.icu 194.169.218.108 v4 AS199330
b.nic.icu 185.24.64.108 v4 AS60890
c.nic.icu 212.18.248.108 v4 AS201304
d.nic.icu 212.18.249.108 v4 AS201303

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

Test With Your Computer

DNS

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

RDAP

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

Registry Information

Active
TLD .icu
Operator ShortDot SA
RDAP Server https://rdap.centralnic.com/icu/ 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 .icu compliance metrics programmatically via our REST API.

Quick Start

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

Example Response

{
  "tld": "icu",
  "display_name": ".icu",
  "operator": "ShortDot SA",
  "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/icu/"
  },
  "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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