TLD SLA Compliance Metrics
Spec 10DNS
| Period | Availability | RTT Compliance | RTT p50 | RTT p95 | Checks | TSLAC |
|---|---|---|---|---|---|---|
| 24h | 100% | 100% | 3.0ms | 15ms | 96 | |
| 7d | 100% | 100% | 3.0ms | 68ms | 2484 | |
| 30d | 94.94% | 94.94% | 4.0ms | 73ms | 3342 |
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% | 33ms | 34ms | 10 | |
| 7d | 99.55% | 34ms | 81ms | 220 | |
| 30d | 99.01% | 34ms | 138ms | 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 | 1.4ms | 1 hour, 53 minutes ago | local | NSID: Auth_Host2.Chicago_Node1 | OK | |
DNS
|
v6 | 1.4ms | 1 hour, 53 minutes ago | local | NSID: Auth_Host1.Chicago_Node1 | OK | |
DNSSEC
|
v4 | 38ms | 1 hour, 41 minutes ago | local | Key: 61939 | OK | |
DNSSEC
|
v6 | 33ms | 1 hour, 41 minutes ago | local | Key: 61939 | OK |
Nameservers
12 IPs tested| Hostname | IP Address | AF | Status |
|---|---|---|---|
a.nic.fit |
37.209.192.10 |
v4 | |
a.nic.fit |
2001:dcd:1::10 |
v6 | |
b.nic.fit |
37.209.194.10 |
v4 | |
b.nic.fit |
2001:dcd:2::10 |
v6 | |
c.nic.fit |
37.209.196.10 |
v4 | |
c.nic.fit |
2001:dcd:3::10 |
v6 | |
x.nic.fit |
156.154.172.82 |
v4 | |
x.nic.fit |
2610:a1:1074::1:82 |
v6 | |
y.nic.fit |
156.154.173.82 |
v4 | |
y.nic.fit |
2610:a1:1075::1:82 |
v6 | |
z.nic.fit |
156.154.174.82 |
v4 | |
z.nic.fit |
2610:a1:1076::1:82 |
v6 |
Per ICANN Spec 10, we test all delegated nameserver IPs independently.
Test With Your Computer
DNS
dig @a.nic.fit fit. SOA +dnssec +nsid
Query SOA with DNSSEC validation and NSID
drill -D fit. SOA @a.nic.fit
Alternative using drill with DNSSEC trace
Registry Information
Active
TLD
.fit
Operator
Registry Services, LLC
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).
API Access
JSON APIAccess .fit compliance metrics programmatically via our REST API.
Quick Start
GET
/any53/api/v1/compliance/fit/
curl -H "X-API-Key: ${YOUR_API_KEY}" \
"https://www.any53.com/any53/api/v1/compliance/fit/"
Example Response
{
"tld": "fit",
"display_name": ".fit",
"operator": "Registry Services, 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
},
"servers": {
"rdap_url": "https://rdap.nic.fit/"
},
"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 |