TLD SLA Compliance Metrics
Spec 10DNS
| Period | Availability | RTT Compliance | RTT p50 | RTT p95 | Checks | TSLAC |
|---|---|---|---|---|---|---|
| 24h | 100% | 100% | 161ms | 255ms | 352 | |
| 7d | 100% | 100% | 161ms | 268ms | 1920 | |
| 30d | 99.75% | 99.75% | 162ms | 605ms | 6496 |
WHOIS
| Period | Availability | RTT Compliance | RTT p50 | RTT p95 | Checks | TSLAC |
|---|---|---|---|---|---|---|
| 24h | 0.00% | 0.00% | 10000ms | 10000ms | 24 | |
| 7d | 0.00% | 0.00% | 10000ms | 10002ms | 120 | |
| 30d | 0.00% | 0.00% | 10000ms | 10003ms | 404 |
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% | 115ms | 205ms | 44 | |
| 7d | 100% | 114ms | 204ms | 240 | |
| 30d | 99.38% | 114ms | 240ms | 808 |
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 | 201ms | 8 minutes ago | local | — | OK | |
DNS
|
v6 | 234ms | 8 minutes ago | local | — | OK | |
DNSSEC
|
v4 | 210ms | 1 hour, 41 minutes ago | local | Key: 16196 | OK | |
DNSSEC
|
v6 | 117ms | 1 hour, 41 minutes ago | local | Key: 16196 | OK | |
WHOIS
|
v4 | 10000ms | 2 hours, 16 minutes ago | local | — | FAIL | |
WHOIS
|
v6 | 10000ms | 2 hours, 15 minutes ago | local | — | FAIL |
Nameservers
16 IPs tested| Hostname | IP Address | AF | ASN | RPKI | Status |
|---|---|---|---|---|---|
a.dns-servers.vn |
194.0.1.18 |
v4 | — | — | |
a.dns-servers.vn |
2001:678:4::12 |
v6 | — | — | |
b.dns-servers.vn |
203.119.73.105 |
v4 | — | — | |
b.dns-servers.vn |
2001:dc8:1:2::105 |
v6 | — | — | |
c.dns-servers.vn |
203.119.38.105 |
v4 | — | — | |
c.dns-servers.vn |
2001:dc8:c000:7::105 |
v6 | — | — | |
d.dns-servers.vn |
203.119.44.105 |
v4 | — | — | |
d.dns-servers.vn |
2001:dc8:8000:2::105 |
v6 | — | — | |
e.dns-servers.vn |
203.119.60.105 |
v4 | — | — | |
e.dns-servers.vn |
2001:dc8:1000:2::105 |
v6 | — | — | |
f.dns-servers.vn |
203.119.68.105 |
v4 | — | — | |
f.dns-servers.vn |
2001:dc8:d000:2::105 |
v6 | — | — | |
g.dns-servers.vn |
204.61.216.115 |
v4 | — | — | |
g.dns-servers.vn |
2001:500:14:6115:ad::1 |
v6 | — | — | |
h.dns-servers.vn |
202.47.142.105 |
v4 | — | — | |
h.dns-servers.vn |
2001:dc8:6000::105 |
v6 | — | — |
Per ICANN Spec 10, we test all delegated nameserver IPs independently.
Test With Your Computer
DNS
dig @a.dns-servers.vn vn. SOA +dnssec +nsid
Query SOA with DNSSEC validation and NSID
drill -D vn. SOA @a.dns-servers.vn
Alternative using drill with DNSSEC trace
WHOIS
whois -h whois.vnnic.vn nic.vn
Query WHOIS server directly
echo "nic.vn" | nc whois.vnnic.vn 43
Raw TCP query (see exact response)
Registry Information
Active
TLD
.vn
Operator
Vietnam
WHOIS Server
whois.vnnic.vn
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).
WHOIS SLA
RTT ≤ 4000ms for 95% of queries.
Availability: 98% (max 864 min/month downtime).
API Access
JSON APIAccess .vn compliance metrics programmatically via our REST API.
Quick Start
GET
/any53/api/v1/compliance/vn/
curl -H "X-API-Key: ${YOUR_API_KEY}" \
"https://www.any53.com/any53/api/v1/compliance/vn/"
Example Response
{
"tld": "vn",
"display_name": ".vn",
"operator": "Vietnam",
"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": "WHOIS",
"availability_24h": 99.95,
"rtt_p50_ms": 180,
"rtt_p95_ms": 412,
"sla_threshold_ms": 4000
},
"servers": {
"whois_host": "whois.vnnic.vn"
},
"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 |