.citadel SLA Compliance

TLD SLA Compliance Metrics

Spec 10

DNS

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	71ms	123ms	196
7d	100%	100%	71ms	166ms	1064
30d	99.92%	99.92%	72ms	180ms	5916

RDAP

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	96ms	112ms	96
7d	100%	100%	99ms	160ms	464
30d	100%	100%	99ms	137ms	2664

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%	140ms	154ms	44
7d	100%	140ms	156ms	234
30d	99.47%	142ms	209ms	1312

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	122ms	39 minutes ago	local	NSID: app3.nrt1.hosts.meta.re…	OK
`DNS`	v6	139ms	105 days, 7 hours ago	local	NSID: app30.nrt1.hosts.meta.r…	OK
`DNSSEC`	v4	141ms	25 minutes ago	local	Key: 43942	OK
`DNSSEC`	v6	157ms	25 minutes ago	local	Key: 43942	OK
`RDAP`	v4	98ms	2 hours, 4 minutes ago	local	TLS 1.3	OK
`RDAP`	v6	100ms	2 hours, 4 minutes ago	local	TLS 1.3	OK

RDAP HTTPS Timing

100ms total

DNS Lookup

—

TCP Connect

2.0ms

TLS Handshake

9.0ms

Time to First Byte

99ms

TLS 1.3 / TLS_AES_128_GCM_SHA256

Nameservers

4 IPs tested

Hostname	IP Address	AF	ASN	RPKI
`a0.nic.citadel`	`65.22.112.33`	v4	—	—
`a2.nic.citadel`	`65.22.115.33`	v4	—	—
`b0.nic.citadel`	`65.22.113.33`	v4	—	—
`c0.nic.citadel`	`65.22.114.33`	v4	—	—

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

Test With Your Computer

DNS

dig @a0.nic.citadel citadel. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID

drill -D citadel. SOA @a0.nic.citadel Alternative using drill with DNSSEC trace

RDAP

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

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

Open in Browser View RDAP response directly

Registry Information

Active

TLD .citadel

Operator Citadel Domain LLC

RDAP Server https://rdap.identitydigital.services/rdap/ 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 .citadel compliance metrics programmatically via our REST API.

Quick Start

GET /any53/api/v1/compliance/citadel/

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

Example Response

{
  "tld": "citadel",
  "display_name": ".citadel",
  "operator": "Citadel Domain LLC",
  "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.identitydigital.services/rdap/"
  },
  "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