.citadel SLA Compliance

TLD SLA Compliance Metrics

Spec 10

DNS

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	70ms	122ms	192
7d	100%	100%	70ms	137ms	1080
30d	100%	100%	71ms	157ms	5972

RDAP

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	167ms	171ms	80
7d	100%	100%	168ms	180ms	480
30d	100%	100%	169ms	185ms	2680

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%	142ms	157ms	44
7d	100%	138ms	153ms	240
30d	100%	140ms	155ms	1316

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	37 minutes ago	local	NSID: app9.nrt1.hosts.meta.re…	OK
`DNS`	v6	139ms	56 days, 22 hours ago	local	NSID: app30.nrt1.hosts.meta.r…	OK
`DNSSEC`	v4	140ms	20 minutes ago	local	Key: 43942	OK
`DNSSEC`	v6	152ms	20 minutes ago	local	Key: 43942	OK
`RDAP`	v4	171ms	1 hour, 1 minute ago	local	TLS 1.3	OK
`RDAP`	v6	167ms	1 hour, 1 minute ago	local	TLS 1.3	OK

RDAP HTTPS Timing

167ms total

DNS Lookup

—

TCP Connect

48ms

TLS Handshake

53ms

Time to First Byte

166ms

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