TLD SLA Compliance Metrics
Spec 10DNS
| Period | Availability | RTT Compliance | RTT p50 | RTT p95 | Checks | TSLAC |
|---|---|---|---|---|---|---|
| 24h | 100% | 100% | 29ms | 162ms | 770 | |
| 7d | 100% | 100% | 32ms | 517ms | 4144 | |
| 30d | 100% | 100% | 30ms | 855ms | 23380 |
RDAP
| Period | Availability | RTT Compliance | RTT p50 | RTT p95 | Checks | TSLAC |
|---|---|---|---|---|---|---|
| 24h | 100% | 100% | 343ms | 477ms | 60 | |
| 7d | 100% | 100% | 336ms | 500ms | 356 | |
| 30d | 99.80% | 99.70% | 354ms | 542ms | 2004 |
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% | 39ms | 103ms | 88 | |
| 7d | 100% | 38ms | 102ms | 476 | |
| 30d | 100% | 38ms | 110ms | 2680 |
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 | 5 minutes ago | local | NSID: u-ci-nominet2.uschi1. | OK | |
DNS
|
v6 | 12ms | 5 minutes ago | local | NSID: u-ci-nominet1.cator1. | OK | |
DNSSEC
|
v4 | 42ms | 56 minutes ago | local | Key: 29776 | OK | |
DNSSEC
|
v6 | 102ms | 56 minutes ago | local | Key: 29776 | OK | |
RDAP
|
v4 | 384ms | 1 hour, 10 minutes ago | local | TLS 1.3 | OK | |
RDAP
|
v6 | 286ms | 1 hour, 9 minutes ago | local | TLS 1.3 | OK |
RDAP HTTPS Timing
286ms total
DNS Lookup
—
TCP Connect
86ms
TLS Handshake
95ms
Time to First Byte
286ms
TLS 1.3 / TLS_AES_128_GCM_SHA256
Nameservers
14 IPs tested| Hostname | IP Address | AF | ASN | RPKI | Status |
|---|---|---|---|---|---|
dns1.nic.kindle |
213.248.218.58 |
v4 | — | — | |
dns1.nic.kindle |
2a01:618:402::58 |
v6 | — | — | |
dns2.nic.kindle |
103.49.82.58 |
v4 | — | — | |
dns2.nic.kindle |
2401:fd80:402::58 |
v6 | — | — | |
dns3.nic.kindle |
213.248.222.58 |
v4 | — | — | |
dns3.nic.kindle |
2a01:618:406::58 |
v6 | — | — | |
dns4.nic.kindle |
43.230.50.58 |
v4 | — | — | |
dns4.nic.kindle |
2401:fd80:406::58 |
v6 | — | — | |
dnsa.nic.kindle |
156.154.100.3 |
v4 | AS12008 | ||
dnsa.nic.kindle |
2001:502:ad09::3 |
v6 | — | — | |
dnsb.nic.kindle |
156.154.101.3 |
v4 | AS12008 | ||
dnsb.nic.kindle |
2001:502:2eda::3 |
v6 | — | — | |
dnsc.nic.kindle |
156.154.102.3 |
v4 | AS12008 | ||
dnsd.nic.kindle |
156.154.103.3 |
v4 | AS12008 |
Per ICANN Spec 10, we test all delegated nameserver IPs independently.
Test With Your Computer
DNS
dig @dns1.nic.kindle kindle. SOA +dnssec +nsid
Query SOA with DNSSEC validation and NSID
drill -D kindle. SOA @dns1.nic.kindle
Alternative using drill with DNSSEC trace
RDAP
curl -sS "https://rdap.nominet.uk/kindle/domain/nic.kindle" | jq .
Fetch RDAP JSON (positive lookup)
curl -I -sS "https://rdap.nominet.uk/kindle/domain/nic.kindle"
Headers only (check TLS, timing)
Open in Browser
View RDAP response directly
Registry Information
Active
TLD
.kindle
Operator
Amazon Registry Services, Inc.
RDAP Server
https://rdap.nominet.uk/kindle/
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 APIAccess .kindle compliance metrics programmatically via our REST API.
Quick Start
GET
/any53/api/v1/compliance/kindle/
curl -H "X-API-Key: ${YOUR_API_KEY}" \
"https://www.any53.com/any53/api/v1/compliance/kindle/"
Example Response
{
"tld": "kindle",
"display_name": ".kindle",
"operator": "Amazon Registry Services, Inc.",
"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.nominet.uk/kindle/"
},
"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 |