.bbc

TLD SLA Compliance Monitoring

TLD SLA Compliance Metrics

Spec 10

DNS

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 27ms 89ms 256
7d 100% 100% 27ms 139ms 1440
30d 99.69% 99.69% 28ms 415ms 4968

RDAP

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 421ms 502ms 24
7d 96.67% 96.67% 402ms 826ms 120
30d 98.02% 98.02% 427ms 807ms 404

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 Status
24h 100% 37ms 103ms 32
7d 100% 38ms 103ms 180
30d 99.67% 38ms 149ms 614

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 TSLAC
DNS v4 1.4ms 1 hour, 55 minutes ago local NSID: u-ci-nominet1.uschi1. OK
DNS v6 1.4ms 160 days, 3 hours ago local NSID: u-ci-nominet2.uschi1. OK
DNSSEC v4 38ms 48 minutes ago local Key: 10550 OK
DNSSEC v6 102ms 48 minutes ago local Key: 10550 OK
RDAP v4 414ms 2 hours, 39 minutes ago local TLS 1.3 OK
RDAP v6 474ms 2 hours, 39 minutes ago local TLS 1.3 OK

RDAP HTTPS Timing

474ms total
DNS Lookup
188ms
TCP Connect
86ms
TLS Handshake
99ms
Time to First Byte
474ms

TLS 1.3 / TLS_AES_128_GCM_SHA256

Nameservers

8 IPs tested
Hostname IP Address AF ASN RPKI Status
dns1.nic.bbc 213.248.219.4 v4 — —
dns2.nic.bbc 103.49.83.4 v4 — —
dns3.nic.bbc 213.248.223.4 v4 — —
dns4.nic.bbc 43.230.51.4 v4 — —
dnsa.nic.bbc 156.154.100.3 v4 AS12008
dnsb.nic.bbc 156.154.101.3 v4 AS12008
dnsc.nic.bbc 156.154.102.3 v4 AS12008
dnsd.nic.bbc 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.bbc bbc. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID
drill -D bbc. SOA @dns1.nic.bbc Alternative using drill with DNSSEC trace

RDAP

curl -sS "https://rdap.nominet.uk/bbc/domain/nic.bbc" | jq . Fetch RDAP JSON (positive lookup)
curl -I -sS "https://rdap.nominet.uk/bbc/domain/nic.bbc" Headers only (check TLS, timing)
Open in Browser View RDAP response directly

Registry Information

Active
TLD .bbc
Operator British Broadcasting Corporation
RDAP Server https://rdap.nominet.uk/bbc/ 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 .bbc compliance metrics programmatically via our REST API.

Quick Start

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

Example Response

{
  "tld": "bbc",
  "display_name": ".bbc",
  "operator": "British Broadcasting Corporation",
  "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/bbc/"
  },
  "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

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