.booking SLA Compliance

TLD SLA Compliance Metrics

Spec 10

DNS

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	9.0ms	420ms	444
7d	99.59%	99.59%	7.0ms	38ms	2520
30d	99.85%	99.85%	7.0ms	246ms	14052

RDAP (TCP)

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	30ms	164ms	30
7d	100%	100%	28ms	120ms	180
30d	100%	100%	30ms	122ms	1008

EPP *

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	43ms	48ms	30
7d	100%	100%	44ms	48ms	180
30d	100%	100%	44ms	48ms	998

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%	32ms	35ms	62
7d	99.44%	32ms	118ms	360
30d	99.65%	32ms	54ms	2004

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	12ms	5 minutes ago	local	NSID: Auth_Host3.Toronto_Node1	OK
`DNS`	v6	11ms	56 days, 22 hours ago	local	NSID: Auth_Host2.Toronto_Node1	OK
`DNSSEC`	v4	30ms	34 seconds ago	local	Key: 29245	OK
`DNSSEC`	v6	30ms	34 seconds ago	local	Key: 29245	OK
`EPP *`	v4	57ms	2 hours, 4 minutes ago	local	Tudor EPP (Mock) v2.0	OK
`EPP *`	v6	41ms	2 hours, 4 minutes ago	local	Tudor EPP (Mock) v2.0	OK
`RDAP` TCP	v4	207ms	9 minutes ago	local	—	OK
`RDAP` TCP	v6	22ms	9 minutes ago	local	—	OK

RDAP HTTPS Timing

95ms total

DNS Lookup

—

TCP Connect

22ms

TLS Handshake

43ms

Time to First Byte

95ms

TLS 1.2 / TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256

Nameservers

6 IPs tested

Hostname	IP Address	AF	ASN	RPKI
`a.nic.booking`	`37.209.192.9`	v4	AS12008
`b.nic.booking`	`37.209.194.9`	v4	AS12008
`c.nic.booking`	`37.209.196.9`	v4	AS12008
`ns1.dns.nic.booking`	`156.154.144.27`	v4	—	—
`ns2.dns.nic.booking`	`156.154.145.27`	v4	—	—
`ns3.dns.nic.booking`	`156.154.159.27`	v4	—	—

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

Test With Your Computer

DNS

dig @a.nic.booking booking. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID

drill -D booking. SOA @a.nic.booking Alternative using drill with DNSSEC trace

RDAP

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

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

Open in Browser View RDAP response directly

Registry Information

Active

TLD .booking

Operator Booking.com B.V.

RDAP Server https://rdap.nic.booking/ 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).

EPP SLA RTT ≤ 4000ms for 95% of commands (Spec 10 §5). Availability: 98% (max 864 min/month downtime). (Demo mode)

API Access

JSON API

Access .booking compliance metrics programmatically via our REST API.

Quick Start

GET /any53/api/v1/compliance/booking/

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

Example Response

{
  "tld": "booking",
  "display_name": ".booking",
  "operator": "Booking.com B.V.",
  "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.booking/"
  },
  "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