.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% 35ms 86ms 256
7d 92.31% 92.31% 33ms 86ms 1448
30d 98.41% 98.41% 31ms 211ms 8040

RDAP

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 409ms 529ms 20
7d 93.10% 93.10% 1068ms 1192ms 116
30d 98.80% 98.80% 541ms 667ms 668

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% 102ms 103ms 34
7d 93.06% 96ms 376ms 144
30d 98.97% 75ms 152ms 970

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 1.3ms 19 minutes ago local NSID: u-ci-nominet1.uschi1. OK
DNS v6 1.4ms 205 days, 10 hours ago local NSID: u-ci-nominet2.uschi1. OK
DNSSEC v4 104ms 1 hour, 12 minutes ago local Key: 10550 OK
DNSSEC v6 102ms 1 hour, 12 minutes ago local Key: 10550 OK
RDAP v4 372ms 1 hour, 3 minutes ago local TLS 1.3 OK
RDAP v6 478ms 1 hour, 3 minutes ago local TLS 1.3 OK

RDAP HTTPS Timing

478ms total
DNS Lookup
198ms
TCP Connect
85ms
TLS Handshake
94ms
Time to First Byte
478ms

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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