.amsterdam SLA Compliance

TLD SLA Compliance Metrics

Spec 10

DNS

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	5.0ms	21ms	84
7d	99.17%	99.17%	4.0ms	159ms	480
30d	99.75%	99.75%	4.0ms	159ms	1624

RDAP (TCP)

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	94ms	113ms	10
7d	100%	100%	95ms	122ms	60
30d	100%	100%	98ms	151ms	204

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%	20ms	21ms	40
7d	100%	20ms	21ms	240
30d	99.75%	44ms	45ms	816

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	10ms	30 minutes ago	local	NSID: YYZ1	OK
`DNS`	v6	2.5ms	30 minutes ago	local	NSID: i3d-us14-ns01-148249	OK
`DNSSEC`	v4	20ms	1 hour, 12 minutes ago	local	Key: 29930	OK
`DNSSEC`	v6	21ms	1 hour, 12 minutes ago	local	Key: 29930	OK
`RDAP` TCP	v4	109ms	3 hours, 33 minutes ago	local	—	OK
`RDAP` TCP	v6	94ms	3 hours, 33 minutes ago	local	—	OK

RDAP HTTPS Timing

724ms total

DNS Lookup

—

TCP Connect

144ms

TLS Handshake

262ms

Time to First Byte

724ms

TLS 1.3 / TLS_AES_256_GCM_SHA384

Nameservers

4 IPs tested

Hostname	IP Address	AF	ASN	RPKI
`ns1.dns.amsterdam`	`194.0.28.4`	v4	—	—
`ns1.dns.amsterdam`	`2001:678:2c:0:194:0:28:4`	v6	—	—
`ns3.dns.amsterdam`	`194.0.25.26`	v4	—	—
`ns4.dns.amsterdam`	`185.159.199.202`	v4	—	—

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

Test With Your Computer

DNS

dig @ns1.dns.amsterdam amsterdam. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID

drill -D amsterdam. SOA @ns1.dns.amsterdam Alternative using drill with DNSSEC trace

RDAP

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

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

Open in Browser View RDAP response directly

Registry Information

Active

TLD .amsterdam

Operator Gemeente Amsterdam

RDAP Server https://rdap.nic.amsterdam/ 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 .amsterdam compliance metrics programmatically via our REST API.

Quick Start

GET /any53/api/v1/compliance/amsterdam/

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

Example Response

{
  "tld": "amsterdam",
  "display_name": ".amsterdam",
  "operator": "Gemeente Amsterdam",
  "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.amsterdam/"
  },
  "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