usability.engineering - dns.ninja

`usability.engineering`

DNSSEC	⚠️ Not signed
A	89.31.143.90^{🇩🇪 UDAG89.31.143.0/24}
NS	`ns.udag.de` ⭐
		A	2001:8d8:fe:53:217:160:80:253^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns.udag.de`
		A	217.160.80.253^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns.udag.de`
NS	`ns.udag.net`
		A	2607:f1c0:fe:53:185:132:33:253^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`ns.udag.net`
		A	185.132.33.253^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns.udag.net`
NS	`ns.udag.org`
		A	2607:f1c0:fe:53:185:132:34:253^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`ns.udag.org`
		A	185.132.34.253^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns.udag.org`
MX	`mx00.udag.de` ⭐
		A	62.146.106.39^{🇩🇪 IPX-AS1559862.146.104.0/22 NorthC Deutschland GmbH}
			PTR	`mx00.udag.de`
MX	`mx01.udag.de`⁽²⁰⁾
		A	62.146.106.40^{🇩🇪 IPX-AS1559862.146.104.0/22 NorthC Deutschland GmbH}
			PTR	`mx01.udag.de`
TXT	`v=spf1 include:_smtp.udag.de ~all`
SOA	`ns.udag.de`hostmaster@united-domains.de 2023-12-22 #5

`engineering`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.engineering` ⭐
	NS	`v0n1.nic.engineering`
	NS	`v0n2.nic.engineering`
	NS	`v0n3.nic.engineering`
	NS	`v2n0.nic.engineering`
	NS	`v2n1.nic.engineering`
	SOA	`v0n0.nic.engineering`hostmaster@donuts.email serial=1783204714

Same first word

DNS History

7 records (6 active, 1 former)

●NSns.udag.de2016-12-10 → 2026-07-04 · 2 obs

● 2016-12-10 19:22:30
● 2026-07-04 23:27:58

●NSns.udag.net2016-12-10 → 2026-07-04 · 2 obs

● 2016-12-10 19:22:30
● 2026-07-04 23:27:58

●NSns.udag.org2016-12-10 → 2026-07-04 · 2 obs

● 2016-12-10 19:22:30
● 2026-07-04 23:27:58

●MXmx00.udag.de2016-12-10 → 2026-07-04 · 2 obs

● 2016-12-10 19:22:30
● 2026-07-04 23:27:58

●MXmx01.udag.de2016-12-10 → 2026-07-04 · 2 obs

● 2016-12-10 19:22:30
● 2026-07-04 23:27:58

○A89.31.143.162016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 19:22:30
○ 2026-04-08 08:49:50
○ 2026-07-04 23:27:58

●A89.31.143.902026-04-08 → 2026-07-04 · 3 obs

○ 2016-12-10 19:22:30
● 2026-04-08 08:49:50
● 2026-07-04 23:27:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
engineering	v0n0.nic.engineering, v0n1.nic.engineering, v0n2.nic.engineering, v0n3.nic.engineering...	12 records
usability.engineering	ns.udag.org, ns.udag.de, ns.udag.net	-

✅ Authoritative Response

Server:185.132.34.253

NS records: ns.udag.org, ns.udag.de, ns.udag.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for usability.engineering (unsigned zone)

⏱️ Timing

Total: 640ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`89.31.143.90`
NS	3	`ns.udag.de, ns.udag.net...`
MX	2	`mx00.udag.de (pri: 10), mx01.udag.de (pri: 20)`
TXT	1	`v=spf1 include:_smtp.udag.de ~all`
SOA	1	`ns.udag.de hostmaster.united-domains.de`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.engineering, v0n0.nic.engineering, v0n1.nic.engineering...)

Analysis

IP Addresses

usability.engineering resolves to one IP address: 89.31.143.90.

querulant.nl, ns1.craftnips.com, uebersetzungsdienst.at and two other host names share IP numbers with usability.engineering.

Name Servers

usability.engineering carries NS records delegating to ns.udag.de, ns.udag.net and ns.udag.org.

The name servers of usability.engineering overlap at least partially with those of other domains — among them ckcc.de, giardien.de, lemml.de and two more.

ns.udag.de, ns.udag.net and ns.udag.org are three hostnames that each resolve to a pair of IP addresses: ns.udag.de to 217.160.80.253 and 2001:8d8:fe:53:217:160:80:253, ns.udag.net to 185.132.33.253 and 2607:f1c0:fe:53:185:132:33:253, and ns.udag.org to 185.132.34.253 and 2607:f1c0:fe:53:185:132:34:253.

Mail Servers

Mail for usability.engineering is handled by two mail servers — mx00.udag.de and mx01.udag.de.

usability.engineering uses an identical mail server configuration to several other domains — among them elektro-eder.de, fernbusverkehr.eu, unitedprotectors.com and two more.

Both mx00.udag.de and mx01.udag.de have a single IP address each — mx00.udag.de resolves to 62.146.106.39 while mx01.udag.de resolves to 62.146.106.40.