.ren

TLD SLA Compliance Monitoring

TLD SLA Compliance Metrics

Spec 10

DNS

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 89ms 235ms 354
7d 100% 100% 88ms 340ms 1968
30d 99.91% 99.91% 87ms 746ms 10926

RDAP

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 80ms 98ms 44
7d 100% 100% 68ms 84ms 240
30d 100% 100% 70ms 94ms 1340

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 50.00% 40ms 40ms 44
7d 50.00% 36ms 36ms 240
30d 49.92% 36ms 36ms 1322

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 230ms 42 minutes ago local — OK
DNS v6 18ms 55 days, 6 hours ago local — OK
DNSSEC v4 36ms 7 minutes ago local Key: 6712 OK
DNSSEC v6 — 7 minutes ago local — FAIL
RDAP v4 71ms 39 minutes ago local TLS 1.3 OK
RDAP v6 71ms 39 minutes ago local TLS 1.3 OK

RDAP HTTPS Timing

71ms total
DNS Lookup
—
TCP Connect
17ms
TLS Handshake
20ms
Time to First Byte
71ms

TLS 1.3 / TLS_AES_256_GCM_SHA384

Nameservers

6 IPs tested
Hostname IP Address AF ASN RPKI Status
a.zdnscloud.cn 203.99.24.1 v4 AS38345
b.zdnscloud.cn 203.99.25.1 v4 AS38345
c.zdnscloud.com 203.99.26.1 v4 AS38345
d.zdnscloud.com 203.99.27.1 v4 AS38345
f.zdnscloud.cn 116.169.54.111 v4 AS4837
g.zdnscloud.com 223.72.199.37 v4 AS56048

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

Test With Your Computer

DNS

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

RDAP

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

Registry Information

Active
TLD .ren
Operator ZDNS International Limited
RDAP Server https://rdap.zdnsgtld.com/ren/ 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 .ren compliance metrics programmatically via our REST API.

Quick Start

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

Example Response

{
  "tld": "ren",
  "display_name": ".ren",
  "operator": "ZDNS International 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.zdnsgtld.com/ren/"
  },
  "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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