www.usability.nl - robtex.com

www.usability.nl

DNSSEC⚠️ Not signed
A194.87.245.193🇨🇿 ASNET194.87.245.0/24
PTRmail.301domains.com
NSns1.301domains.com ⭐ ⚠️ Not in parent delegation
A194.87.245.193🇨🇿 ASNET194.87.245.0/24
PTRmail.301domains.com
NSns2.301domains.com ⚠️ Not in parent delegation
A194.87.245.193🇨🇿 ASNET194.87.245.0/24
PTRmail.301domains.com
SOAns1.301domains.comadmin@301domains.com 2026-02-25 #1

usability.nl

DNSSEC⚠️ Not signed
A194.87.245.193🇨🇿 ASNET194.87.245.0/24
NSns1.301domains.com ⭐
NSns2.301domains.com
SOAns1.301domains.comadmin@301domains.com 2026-02-25 #1

Same first word

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DNS History

6 records (3 active, 3 former)

2017201820192020202120222023202420252026NSns1.301domains.comns2.301domains.comA194.87.245.193109.200.201.218216.146.46.10216.146.46.11
●NSns1.301domains.com2026-05-11 → 2026-05-11 · 2 obs
● 2026-05-11 20:31:06
● 2026-05-11 20:31:08
●NSns2.301domains.com2026-05-11 → 2026-05-11 · 2 obs
● 2026-05-11 20:31:06
● 2026-05-11 20:31:08
○A109.200.201.2182016-12-21 → 2017-10-07 · 4 obs
● 2016-12-21 03:57:32
● 2017-10-07 10:05:48
○ 2026-02-18 18:11:18
○ 2026-05-11 20:31:08
●A194.87.245.1932026-05-11 → 2026-05-11 · 3 obs
○ 2026-02-18 18:11:18
● 2026-05-11 20:31:06
● 2026-05-11 20:31:08
○A216.146.46.102026-02-18 → 2026-02-18 · 4 obs
○ 2017-10-07 10:05:48
● 2026-02-18 18:11:18
○ 2026-05-11 20:31:06
○ 2026-05-11 20:31:08
○A216.146.46.112026-02-18 → 2026-02-18 · 4 obs
○ 2017-10-07 10:05:48
● 2026-02-18 18:11:18
○ 2026-05-11 20:31:06
○ 2026-05-11 20:31:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
nlns1.dns.nl, ns3.dns.nl, ns4.dns.nl-
usability.nlns1.301domains.com, ns2.301domains.com-

✅ Authoritative Response

Server:194.87.245.193

NS records: ns1.301domains.com, ns2.301domains.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for usability.nl (unsigned zone)

⏱️ Timing

Total: 434ms | Queries: -

📄 Records

TypeCountSample Data
A1194.87.245.193
NS2ns1.301domains.com, ns2.301domains.com
SOA1ns1.301domains.com admin.301domains.com

Analysis

IP Addresses

www.usability.nl resolves to one IP number: 194.87.245.193.

other host names including kollumercourant.nl, webmail.gettheguy.co.uk, assassins-film.co.uk, stmstm.org.uk and ffei.co.uk share IP numbers with www.usability.nl.

Name Servers

www.usability.nl is delegated to two name servers ns1.301domains.com and ns2.301domains.com.

www.usability.nl shares the same name server setup as other domains, for instance neecscounselling.org.uk, www.acceledent.co.uk, www.google-helyezes-javitas.komplex-webrent.eu, hetmeisjemetdevoedselallergie.nl and aptg.co.uk.

www.usability.nl at least partially shares name servers with other domains, for instance hairandharlow.com.au.

Host names with a single IP:

ns1.301domains.com points to 194.87.245.193.

ns2.301domains.com points to 194.87.245.193.

Host names pointing to 194.87.245.193: ns1.301domains.com and ns2.301domains.com.