.tz SLA Compliance

TLD SLA Compliance Metrics

Spec 10

DNS

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	100%	100%	94ms	306ms	300
7d	100%	100%	94ms	579ms	1780
30d	99.92%	99.92%	94ms	888ms	9835

RDAP

Period	Availability	RTT Compliance	RTT p50	RTT p95	Checks
24h	50.00%	50.00%	1127ms	2296ms	64
7d	48.33%	48.33%	964ms	2266ms	360
30d	48.21%	47.51%	1196ms	3019ms	2012

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%	124ms	133ms	66
7d	100%	123ms	131ms	360
30d	99.60%	124ms	164ms	1996

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	24ms	15 minutes ago	local	NSID: dns-linxnova-01.nic.cz	OK
`DNS`	v6	40ms	55 days, 4 hours ago	local	NSID: dns-sixusa-dns03.nic.cz	OK
`DNSSEC`	v4	133ms	59 minutes ago	local	Key: 30234	OK
`DNSSEC`	v6	122ms	59 minutes ago	local	Key: 30234	OK
`RDAP`	v4	1833ms	1 hour, 16 minutes ago	local	TLS 1.2	OK
`RDAP`	v6	0.36ms	1 hour, 16 minutes ago	local	—	FAIL

RDAP HTTPS Timing

1833ms total

DNS Lookup

—

TCP Connect

283ms

TLS Handshake

575ms

Time to First Byte

1832ms

TLS 1.2 / TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256

Nameservers

5 IPs tested

Hostname	IP Address	AF	ASN	RPKI
`fork.sth.dnsnode.net`	`77.72.229.254`	v4	—	—
`ns.anycast.co.tz`	`204.61.216.15`	v4	—	—
`ns2.tznic.or.tz`	`196.216.162.67`	v4	—	—
`rip.psg.com`	`147.28.0.39`	v4	AS3130
`tz-e.ns.nic.cz`	`185.43.134.11`	v4	—	—

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

Test With Your Computer

DNS

dig @fork.sth.dnsnode.net tz. SOA +dnssec +nsid Query SOA with DNSSEC validation and NSID

drill -D tz. SOA @fork.sth.dnsnode.net Alternative using drill with DNSSEC trace

RDAP

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

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

Open in Browser View RDAP response directly

Registry Information

Active

TLD .tz

Operator Tanzania

RDAP Server https://whois.tznic.or.tz/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 .tz compliance metrics programmatically via our REST API.

Quick Start

GET /any53/api/v1/compliance/tz/

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

Example Response

{
  "tld": "tz",
  "display_name": ".tz",
  "operator": "Tanzania",
  "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://whois.tznic.or.tz/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