TLD SLA Compliance Metrics
Spec 10DNS
| Period | Availability | RTT Compliance | RTT p50 | RTT p95 | Checks | TSLAC |
|---|---|---|---|---|---|---|
| 24h | 100% | 100% | 7.0ms | 34ms | 222 | |
| 7d | 93.97% | 93.97% | 7.0ms | 27ms | 1212 | |
| 30d | 98.65% | 98.65% | 8.0ms | 145ms | 6996 |
RDAP
| Period | Availability | RTT Compliance | RTT p50 | RTT p95 | Checks | TSLAC |
|---|---|---|---|---|---|---|
| 24h | 100% | 100% | 167ms | 250ms | 40 | |
| 7d | 98.21% | 98.21% | 172ms | 574ms | 224 | |
| 30d | 99.70% | 99.70% | 169ms | 313ms | 1320 |
DNSSEC Validation Metrics
Registry Agreement Spec 6DNSSEC 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% | 35ms | 38ms | 22 | |
| 7d | 91.67% | 33ms | 419ms | 120 | |
| 30d | 98.21% | 36ms | 136ms | 672 |
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 | 12ms | 25 minutes ago | local | NSID: Auth_Host3.Toronto_Node1 | OK | |
DNS
|
v6 | 13ms | 206 days, 19 hours ago | local | NSID: Auth_Host3.Toronto_Node1 | OK | |
DNSSEC
|
v4 | 39ms | 31 minutes ago | local | Key: 39961 | OK | |
DNSSEC
|
v6 | 36ms | 31 minutes ago | local | Key: 39961 | OK | |
RDAP
|
v4 | 170ms | 1 hour, 40 minutes ago | local | TLS 1.3 | OK | |
RDAP
|
v6 | 158ms | 1 hour, 40 minutes ago | local | TLS 1.3 | OK |
RDAP HTTPS Timing
158ms total
DNS Lookup
0.27ms
TCP Connect
49ms
TLS Handshake
53ms
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.download |
37.209.192.10 |
v4 | AS397213 | ||
b.nic.download |
37.209.194.10 |
v4 | AS12008 | ||
c.nic.download |
37.209.196.10 |
v4 | AS12008 | ||
ns1.dns.nic.download |
156.154.144.50 |
v4 | — | — | |
ns2.dns.nic.download |
156.154.145.50 |
v4 | — | — | |
ns3.dns.nic.download |
156.154.159.50 |
v4 | — | — |
Per ICANN Spec 10, we test all delegated nameserver IPs independently.
Test With Your Computer
DNS
dig @a.nic.download download. SOA +dnssec +nsid
Query SOA with DNSSEC validation and NSID
drill -D download. SOA @a.nic.download
Alternative using drill with DNSSEC trace
RDAP
curl -sS "https://rdap.nic.download/domain/nic.download" | jq .
Fetch RDAP JSON (positive lookup)
curl -I -sS "https://rdap.nic.download/domain/nic.download"
Headers only (check TLS, timing)
Open in Browser
View RDAP response directly
Registry Information
ActiveICANN 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 APIAccess .download compliance metrics programmatically via our REST API.
Quick Start
GET
/any53/api/v1/compliance/download/
curl -H "X-API-Key: ${YOUR_API_KEY}" \
"https://www.any53.com/any53/api/v1/compliance/download/"
Example Response
{
"tld": "download",
"display_name": ".download",
"operator": "dot Support Limited",
"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.download/"
},
"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).
Save this key now! It cannot be retrieved later.
Tier:
Rate limit: /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 |