.cx SLA Compliance

TLD SLA Compliance Metrics

Spec 10

DNS

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	6.0ms	239ms	198
7d	100%	100%	4.0ms	254ms	1041
30d	99.92%	99.92%	4.0ms	254ms	5940

RDAP

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	647ms	773ms	60
7d	100%	100%	650ms	729ms	360
30d	99.50%	99.60%	696ms	790ms	2016

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	56
7d	100%	19ms	20ms	286
30d	99.94%	19ms	26ms	1560

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	2.2ms	12 minutes ago	local	—	OK
`DNS`	v6	12ms	105 days, 7 hours ago	local	—	OK
`DNSSEC`	v4	19ms	44 minutes ago	local	Key: 6500	OK
`DNSSEC`	v6	20ms	44 minutes ago	local	Key: 6500	OK
`RDAP`	v4	774ms	7 minutes ago	local	TLS 1.3	OK
`RDAP`	v6	726ms	7 minutes ago	local	TLS 1.3	OK

RDAP HTTPS Timing

726ms total

DNS Lookup

—

TCP Connect

89ms

TLS Handshake

93ms

Time to First Byte

725ms

TLS 1.3 / TLS_AES_256_GCM_SHA384

Nameservers

3 IPs tested

Hostname	IP Address	AF	ASN	RPKI
`ns.anycast.nic.cx`	`204.61.216.16`	v4	—	—
`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