.cx SLA Compliance

TLD SLA Compliance Metrics

Spec 10

DNS

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	42ms	202ms	66
7d	93.28%	93.28%	35ms	261ms	357
30d	98.80%	98.80%	28ms	583ms	2007

RDAP

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	85.00%	80.00%	2224ms	2405ms	40
7d	80.00%	80.00%	2225ms	2433ms	240
30d	94.05%	94.05%	866ms	1243ms	1344

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
24h	100%	19ms	20ms	34
7d	94.32%	18ms	22ms	176
30d	98.71%	19ms	36ms	1004

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
`DNS`	v4	45ms	15 minutes ago	local	NSID: gransy.anycastdns.cz	OK
`DNS`	v6	12ms	205 days, 11 hours ago	local	—	OK
`DNSSEC`	v4	20ms	51 minutes ago	local	Key: 6500	OK
`DNSSEC`	v6	20ms	51 minutes ago	local	Key: 6500	OK
`RDAP`	v4	504ms	10 minutes ago	local	TLS 1.3	OK
`RDAP`	v6	496ms	10 minutes ago	local	TLS 1.3	OK

RDAP HTTPS Timing

496ms total

DNS Lookup

—

TCP Connect

89ms

TLS Handshake

99ms

Time to First Byte

496ms

TLS 1.3 / TLS_AES_256_GCM_SHA384

Nameservers

3 IPs tested

Hostname	IP Address	AF	ASN
`ns.anycast.nic.cx`	`204.61.216.16`	v4	AS42
`ns1.anycastdns.cz`	`185.38.108.108`	v4	AS60592
`ns2.anycastdns.cz`	`185.28.194.194`	v4	AS60592

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

Test With Your Computer

DNS

dig @ns.anycast.nic.cx cx. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID

drill -D cx. SOA @ns.anycast.nic.cx Alternative using drill with DNSSEC trace

RDAP

curl -sS "https://rdap.nic.cx/domain/nic.cx" | jq . Fetch RDAP JSON (positive lookup)

curl -I -sS "https://rdap.nic.cx/domain/nic.cx" Headers only (check TLS, timing)

Open in Browser View RDAP response directly

Registry Information

Active

TLD .cx

Operator Christmas Island

RDAP Server https://rdap.nic.cx/ 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 .cx compliance metrics programmatically via our REST API.

Quick Start

GET /any53/api/v1/compliance/cx/

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

Example Response

{
  "tld": "cx",
  "display_name": ".cx",
  "operator": "Christmas Island",
  "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.nic.cx/"
  },
  "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