.amex

TLD SLA Compliance Monitoring

TLD SLA Compliance Metrics

Spec 10

DNS

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 7.0ms 16ms 72
7d 100% 100% 7.0ms 106ms 1260
30d 88.54% 88.54% 8.0ms 106ms 1714

RDAP

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 93ms 118ms 8
7d 100% 100% 87ms 103ms 180
30d 93.38% 100% 87ms 108ms 272

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% 32ms 33ms 2
7d 100% 32ms 39ms 72
30d 100% 32ms 40ms 114

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 11ms 1 hour, 2 minutes ago local NSID: Auth_Host2.Toronto_Node1 OK
DNS v6 11ms 1 hour, 2 minutes ago local NSID: Auth_Host3.Toronto_Node1 OK
DNSSEC v4 33ms 19 hours, 26 minutes ago local Key: 33586 OK
DNSSEC v6 33ms 19 hours, 26 minutes ago local Key: 33586 OK
RDAP v4 87ms 1 hour, 32 minutes ago local TLS 1.2 OK
RDAP v6 98ms 1 hour, 32 minutes ago local TLS 1.2 OK

RDAP HTTPS Timing

98ms total
DNS Lookup
—
TCP Connect
22ms
TLS Handshake
47ms
Time to First Byte
97ms

TLS 1.2 / TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256

Nameservers

12 IPs tested
Hostname IP Address AF Status
a.nic.amex 37.209.192.9 v4
a.nic.amex 2001:dcd:1::9 v6
b.nic.amex 37.209.194.9 v4
b.nic.amex 2001:dcd:2::9 v6
c.nic.amex 37.209.196.9 v4
c.nic.amex 2001:dcd:3::9 v6
ns1.dns.nic.amex 156.154.144.10 v4
ns1.dns.nic.amex 2610:a1:1071::a v6
ns2.dns.nic.amex 156.154.145.10 v4
ns2.dns.nic.amex 2610:a1:1072::a v6
ns3.dns.nic.amex 156.154.159.10 v4
ns3.dns.nic.amex 2610:a1:1073::a v6

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

Test With Your Computer

DNS

dig @a.nic.amex amex. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID
drill -D amex. SOA @a.nic.amex Alternative using drill with DNSSEC trace

RDAP

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

Registry Information

Active
TLD .amex
Operator American Express Travel Related Services Company, Inc.
RDAP Server https://rdap.nic.amex/ 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 .amex compliance metrics programmatically via our REST API.

Quick Start

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

Example Response

{
  "tld": "amex",
  "display_name": ".amex",
  "operator": "American Express Travel Related Services Company, Inc.",
  "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.amex/"
  },
  "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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