.silk SLA Compliance

TLD SLA Compliance Metrics

Spec 10

DNS

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	27ms	86ms	440
7d	100%	100%	29ms	117ms	2360
30d	100%	100%	28ms	117ms	13168

RDAP

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	339ms	394ms	52
7d	100%	100%	319ms	388ms	344
30d	99.60%	99.55%	356ms	451ms	1984

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%	38ms	102ms	66
7d	100%	37ms	102ms	354
30d	100%	38ms	103ms	1994

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	1.3ms	13 minutes ago	local	NSID: u-ci-nominet1.uschi1.	OK
`DNS`	v6	1.5ms	103 days, 13 hours ago	local	NSID: u-ci-nominet2.uschi1.	OK
`DNSSEC`	v4	38ms	15 minutes ago	local	Key: 23695	OK
`DNSSEC`	v6	102ms	15 minutes ago	local	Key: 23695	OK
`RDAP`	v4	285ms	40 minutes ago	local	TLS 1.3	OK
`RDAP`	v6	283ms	39 minutes ago	local	TLS 1.3	OK

RDAP HTTPS Timing

283ms total

DNS Lookup

—

TCP Connect

86ms

TLS Handshake

96ms

Time to First Byte

282ms

TLS 1.3 / TLS_AES_128_GCM_SHA256

Nameservers

8 IPs tested

Hostname	IP Address	AF	ASN	RPKI
`dns1.nic.silk`	`213.248.218.59`	v4	—	—
`dns2.nic.silk`	`103.49.82.59`	v4	—	—
`dns3.nic.silk`	`213.248.222.59`	v4	—	—
`dns4.nic.silk`	`43.230.50.59`	v4	—	—
`dnsa.nic.silk`	`156.154.100.3`	v4	AS12008
`dnsb.nic.silk`	`156.154.101.3`	v4	AS12008
`dnsc.nic.silk`	`156.154.102.3`	v4	AS12008
`dnsd.nic.silk`	`156.154.103.3`	v4	AS12008

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

Test With Your Computer

DNS

dig @dns1.nic.silk silk. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID

drill -D silk. SOA @dns1.nic.silk Alternative using drill with DNSSEC trace

RDAP

curl -sS "https://rdap.nominet.uk/silk/domain/nic.silk" | jq . Fetch RDAP JSON (positive lookup)

curl -I -sS "https://rdap.nominet.uk/silk/domain/nic.silk" Headers only (check TLS, timing)

Open in Browser View RDAP response directly

Registry Information

Active

TLD .silk

Operator Amazon Registry Services, Inc.

RDAP Server https://rdap.nominet.uk/silk/ 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 .silk compliance metrics programmatically via our REST API.

Quick Start

GET /any53/api/v1/compliance/silk/

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

Example Response

{
  "tld": "silk",
  "display_name": ".silk",
  "operator": "Amazon Registry Services, Inc.",
  "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.nominet.uk/silk/"
  },
  "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