.tw

TLD SLA Compliance Monitoring

TLD SLA Compliance Metrics

Spec 10

DNS

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 137ms 227ms 96
7d 100% 100% 140ms 692ms 2208
30d 92.11% 92.11% 141ms 692ms 2829

RDAP

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 736ms 843ms 12
7d 100% 99.55% 769ms 1014ms 224
30d 100% 99.68% 795ms 1165ms 312

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% 195ms 221ms 8
7d 100% 202ms 225ms 224
30d 98.38% 204ms 395ms 308

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 2011ms 2 hours, 38 minutes ago local — FAIL
DNS v6 2007ms 2 hours, 38 minutes ago local — FAIL
DNSSEC v4 244ms 5 hours, 30 minutes ago local Key: 51277 OK
DNSSEC v6 196ms 5 hours, 30 minutes ago local Key: 51277 OK
RDAP v4 839ms 2 hours, 53 minutes ago local TLS 1.3 OK
RDAP v6 790ms 2 hours, 53 minutes ago local TLS 1.3 OK

RDAP HTTPS Timing

790ms total
DNS Lookup
—
TCP Connect
217ms
TLS Handshake
384ms
Time to First Byte
789ms

TLS 1.3 / TLS_AES_256_GCM_SHA384

Nameservers

16 IPs tested
Hostname IP Address AF Status
a.dns.tw 203.73.24.25 v4
a.dns.tw 2001:45b1:0:5::25 v6
anytld.apnic.net 202.12.31.53 v4
anytld.apnic.net 2001:dd8:12::53 v6
b.dns.tw 210.201.138.58 v4
b.dns.tw 2404:0:10a0::58 v6
c.dns.tw 203.66.87.201 v4
c.dns.tw 2001:b020:0:77::1 v6
d.dns.tw 60.199.165.186 v4
d.dns.tw 2001:4541:9010:7::186 v6
e.dns.tw 211.20.231.11 v4
e.dns.tw 2001:b000:1e0:c000::11 v6
f.dns.tw 40.65.125.222 v4
g.dns.tw 34.141.111.176 v4
h.dns.tw 204.61.216.119 v4
h.dns.tw 2001:500:14:6119:ad::1 v6

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

Test With Your Computer

DNS

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

RDAP

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

Registry Information

Active
TLD .tw
Operator Taiwan
RDAP Server https://ccrdap.twnic.tw/tw/ 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 .tw compliance metrics programmatically via our REST API.

Quick Start

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

Example Response

{
  "tld": "tw",
  "display_name": ".tw",
  "operator": "Taiwan",
  "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://ccrdap.twnic.tw/tw/",
    "whois_host": "whois.twnic.net.tw"
  },
  "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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