.ntt SLA Compliance

TLD SLA Compliance Metrics

Spec 10

No metrics available yet

Metrics will appear after probes start reporting data. Check back in about an hour.

Current Check Status

Reported by Any53 Probes

Type	AF	RTT	Last Check	Source	Details	Status
`DNS`	v4	123ms	33 days, 20 hours ago	local	NSID: app12.nrt1.hosts.meta.r…	OK
`DNSSEC`	v4	153ms	33 days, 21 hours ago	local	Key: 25342	OK
`DNSSEC`	v6	155ms	33 days, 21 hours ago	local	Key: 25342	OK
`RDAP`	v4	430ms	33 days, 22 hours ago	local	TLS 1.3	OK
`RDAP`	v6	442ms	33 days, 22 hours ago	local	TLS 1.3	OK

RDAP HTTPS Timing

442ms total

DNS Lookup

—

TCP Connect

145ms

TLS Handshake

149ms

Time to First Byte

442ms

TLS 1.3 / TLS_AES_256_GCM_SHA384

Nameservers

4 IPs tested

Hostname	IP Address	AF	ASN	RPKI
`tld1.nic.ntt`	`103.47.2.2`	v4	—	—
`tld2.nic.ntt`	`117.104.133.17`	v4	—	—
`tld3.nic.ntt`	`65.22.40.17`	v4	—	—
`tld5.nic.ntt`	`65.22.40.145`	v4	—	—

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

Test With Your Computer

DNS

dig @tld1.nic.ntt ntt. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID

drill -D ntt. SOA @tld1.nic.ntt Alternative using drill with DNSSEC trace

RDAP

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

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

Open in Browser View RDAP response directly

Registry Information

Active

TLD .ntt

Operator NIPPON TELEGRAPH AND TELEPHONE CORPORATION

RDAP Server https://rdap.nic.ntt/rdap/ 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 .ntt compliance metrics programmatically via our REST API.

Quick Start

GET /any53/api/v1/compliance/ntt/

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

Example Response

{
  "tld": "ntt",
  "display_name": ".ntt",
  "operator": "NIPPON TELEGRAPH AND TELEPHONE 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.nic.ntt/rdap/"
  },
  "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