.delta SLA Compliance

TLD SLA Compliance Metrics

Spec 10

DNS

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	71ms	123ms	264
7d	100%	100%	71ms	169ms	1396
30d	100%	100%	72ms	169ms	7796

RDAP

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	97ms	113ms	64
7d	100%	100%	98ms	121ms	360
30d	100%	100%	97ms	124ms	1996

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%	140ms	154ms	88
7d	99.57%	141ms	237ms	468
30d	99.22%	142ms	301ms	2676

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	123ms	20 minutes ago	local	NSID: app4.nrt1.hosts.meta.re…	OK
`DNS`	v6	139ms	100 days, 12 hours ago	local	NSID: app30.nrt1.hosts.meta.r…	OK
`DNSSEC`	v4	141ms	1 hour, 15 minutes ago	local	Key: 64069	OK
`DNSSEC`	v6	155ms	1 hour, 15 minutes ago	local	Key: 64069	OK
`RDAP`	v4	98ms	47 minutes ago	local	TLS 1.3	OK
`RDAP`	v6	97ms	46 minutes ago	local	TLS 1.3	OK

RDAP HTTPS Timing

97ms total

DNS Lookup

—

TCP Connect

2.0ms

TLS Handshake

12ms

Time to First Byte

97ms

TLS 1.3 / TLS_AES_128_GCM_SHA256

Nameservers

4 IPs tested

Hostname	IP Address	AF	ASN	RPKI
`a0.nic.delta`	`65.22.224.25`	v4	—	—
`a2.nic.delta`	`65.22.227.25`	v4	—	—
`b0.nic.delta`	`65.22.225.25`	v4	—	—
`c0.nic.delta`	`65.22.226.25`	v4	—	—

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

Test With Your Computer

DNS

dig @a0.nic.delta delta. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID

drill -D delta. SOA @a0.nic.delta Alternative using drill with DNSSEC trace

RDAP

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

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

Open in Browser View RDAP response directly

Registry Information

Active

TLD .delta

Operator Delta Air Lines, Inc.

RDAP Server https://rdap.identitydigital.services/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 .delta compliance metrics programmatically via our REST API.

Quick Start

GET /any53/api/v1/compliance/delta/

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

Example Response

{
  "tld": "delta",
  "display_name": ".delta",
  "operator": "Delta Air Lines, 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.identitydigital.services/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