.fresenius

TLD SLA Compliance Monitoring

TLD SLA Compliance Metrics

Spec 10

DNS

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 93ms 225ms 88
7d 99.17% 99.17% 92ms 227ms 480
30d 99.75% 99.75% 51ms 227ms 1624

RDAP

Period Availability RTT Compliance RTT p50 RTT p95 Checks TSLAC
24h 100% 100% 424ms 459ms 40
7d 100% 100% 420ms 492ms 240
30d 100% 100% 420ms 498ms 816

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% 41ms 83ms 22
7d 100% 41ms 86ms 120
30d 99.51% 42ms 118ms 408

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 18ms 6 minutes ago local NSID: WVQS-AQ5DSO-L6ZRS7 OK
DNS v6 18ms 160 days, 7 hours ago local NSID: WVQS-AQ5DSO-L6ZRS7 OK
DNSSEC v4 85ms 1 hour, 7 minutes ago local Key: 48287 OK
DNSSEC v6 41ms 1 hour, 7 minutes ago local Key: 48287 OK
RDAP v4 420ms 3 hours, 42 minutes ago local TLS 1.2 OK
RDAP v6 470ms 3 hours, 42 minutes ago local TLS 1.2 OK

RDAP HTTPS Timing

470ms total
DNS Lookup
0.40ms
TCP Connect
95ms
TLS Handshake
194ms
Time to First Byte
470ms

TLS 1.2 / TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256

Nameservers

4 IPs tested
Hostname IP Address AF ASN RPKI Status
a.nic.fresenius 194.169.218.86 v4 AS199330
b.nic.fresenius 185.24.64.86 v4 AS60890
c.nic.fresenius 212.18.248.86 v4 AS201304
d.nic.fresenius 212.18.249.86 v4 AS201303

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

Test With Your Computer

DNS

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

RDAP

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

Registry Information

Active
TLD .fresenius
Operator Fresenius Immobilien-Verwaltungs-GmbH
RDAP Server https://rdap.centralnic.com/fresenius/ 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 .fresenius compliance metrics programmatically via our REST API.

Quick Start

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

Example Response

{
  "tld": "fresenius",
  "display_name": ".fresenius",
  "operator": "Fresenius Immobilien-Verwaltungs-GmbH",
  "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.centralnic.com/fresenius/"
  },
  "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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