.cx SLA Compliance

TLD SLA Compliance Metrics

Spec 10

DNS

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	63ms	229ms	189
7d	100%	100%	65ms	297ms	1080
30d	99.92%	99.92%	62ms	1143ms	5991

RDAP

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	640ms	711ms	60
7d	100%	100%	623ms	701ms	360
30d	96.46%	96.41%	973ms	1090ms	2008

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%	22ms	22ms	56
7d	100%	19ms	19ms	300
30d	99.75%	19ms	26ms	1626

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	180ms	13 minutes ago	local	—	OK
`DNS`	v6	12ms	56 days, 22 hours ago	local	—	OK
`DNSSEC`	v4	19ms	25 minutes ago	local	Key: 6500	OK
`DNSSEC`	v6	20ms	25 minutes ago	local	Key: 6500	OK
`RDAP`	v4	693ms	16 minutes ago	local	TLS 1.3	OK
`RDAP`	v6	686ms	16 minutes ago	local	TLS 1.3	OK

RDAP HTTPS Timing

686ms total

DNS Lookup

—

TCP Connect

89ms

TLS Handshake

93ms

Time to First Byte

686ms

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