.sx SLA Compliance

TLD SLA Compliance Metrics

Spec 10

DNS

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	16ms	34ms	56
7d	100%	100%	17ms	625ms	1680
30d	94.18%	94.18%	17ms	625ms	2281

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%	29ms	29ms	16
7d	100%	29ms	31ms	266
30d	99.72%	29ms	60ms	356

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	35ms	2 hours, 39 minutes ago	local	NSID: ns-1.cira.us3.knot	OK
`DNS`	v6	26ms	2 hours, 39 minutes ago	local	NSID: ns-2.cira.us3.knot	OK
`DNSSEC`	v4	29ms	38 minutes ago	local	Key: 16495	OK
`DNSSEC`	v6	29ms	38 minutes ago	local	Key: 16495	OK

Nameservers

8 IPs tested

Hostname	IP Address	AF
`ns1.ns.sx`	`185.159.197.10`	v4
`ns1.ns.sx`	`2620:10a:80aa::10`	v6
`ns2.ns.sx`	`185.159.198.10`	v4
`ns2.ns.sx`	`2620:10a:80ab::10`	v6
`ns3.ns.sx`	`185.159.199.10`	v4
`ns3.ns.sx`	`2620:10a:80ac::10`	v6
`ns4.ns.sx`	`45.142.220.101`	v4
`ns4.ns.sx`	`2a0e:dbc0::101`	v6

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

Test With Your Computer

DNS

dig @ns1.ns.sx sx. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID

drill -D sx. SOA @ns1.ns.sx Alternative using drill with DNSSEC trace

Registry Information

Active

TLD .sx

Operator Sint Maarten

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).

API Access

JSON API

Access .sx compliance metrics programmatically via our REST API.

Quick Start

GET /any53/api/v1/compliance/sx/

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

Example Response

{
  "tld": "sx",
  "display_name": ".sx",
  "operator": "Sint Maarten",
  "updated_at": "2026-01-31T12:00:00Z",
  "dns": {
    "availability_24h": 99.99,
    "rtt_p50_ms": 12,
    "rtt_p95_ms": 42,
    "sla_threshold_ms": 500
  },
  "servers": {
    "whois_host": "whois.sx"
  },
  "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