.amsterdam SLA Compliance

TLD SLA Compliance Metrics

Spec 10

DNS

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	10ms	18ms	90
7d	100%	100%	10ms	510ms	1218
30d	94.41%	94.41%	10ms	510ms	1683

RDAP (TCP)

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	136ms	196ms	8
7d	100%	100%	117ms	165ms	110
30d	100%	100%	114ms	184ms	134

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%	36ms	36ms	10
7d	100%	36ms	36ms	224
30d	100%	36ms	36ms	306

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	11ms	1 hour, 2 minutes ago	local	NSID: YYZ2	OK
`DNS`	v6	11ms	1 hour, 2 minutes ago	local	NSID: YYZ2	OK
`DNSSEC`	v4	37ms	52 minutes ago	local	Key: 29930	OK
`DNSSEC`	v6	36ms	52 minutes ago	local	Key: 29930	OK
`RDAP` TCP	v4	277ms	3 hours, 12 minutes ago	local	—	OK
`RDAP` TCP	v6	183ms	3 hours, 12 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

6 IPs tested

Hostname	IP Address	AF
`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
`ns3.dns.amsterdam`	`2001:678:20::26`	v6
`ns4.dns.amsterdam`	`185.159.199.202`	v4
`ns4.dns.amsterdam`	`2620:10a:80ac::202`	v6

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