`dental-masterclass.com`

DNSSEC	⚠️ Not signed
A	2a01:238:20a:202:1163::^{🇩🇪 STRATO2a01:238:20a::/48 Strato AG}
		PTR	`wa3.rzone.de`
A	81.169.145.163^{🇩🇪 STRATO81.169.144.0/22 AG}
NS	`shades09.rzone.de` ⭐
		A	2607:f1c0:fe:53:185:132:34:136^{🇺🇸 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	`shades09.rzone.de`
		A	185.132.34.136^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`shades09.rzone.de`
NS	`docks15.rzone.de`
		A	2001:8d8:fe:53:5747:2a74:d:15^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`docks15.rzone.de`
		A	217.160.80.142^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`docks15.rzone.de`
MX	`smtpin.rzone.de` ⭐
		A	2a01:238:20a:202:50f0::1097^{🇩🇪 STRATO2a01:238:20a::/48 Strato AG}
			PTR	`smtpin.rzone.de`
		A	81.169.145.97^{🇩🇪 STRATO81.169.144.0/22 AG}
			PTR	`smtpin.rzone.de`
SOA	`shades09.rzone.de`hostmaster@strato-rz.de 2023-01-02 #13

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1771291435

Subdomains

www.dental-masterclass.com

Same first word

dental-masterclass.com

DNS History

9 records (5 active, 4 former)

●NSdocks15.rzone.de2026-02-23 → 2026-03-24 · 3 obs

○ 2018-01-23 15:15:20
● 2026-02-23 05:15:44
● 2026-03-24 03:38:32

○NSns-1370.awsdns-43.org2018-01-23 → 2018-01-23 · 3 obs

● 2018-01-23 15:15:20
○ 2026-02-23 05:15:44
○ 2026-03-24 03:38:32

○NSns-178.awsdns-22.com2018-01-23 → 2018-01-23 · 3 obs

● 2018-01-23 15:15:20
○ 2026-02-23 05:15:44
○ 2026-03-24 03:38:32

○NSns-1950.awsdns-51.co.uk2018-01-23 → 2018-01-23 · 3 obs

● 2018-01-23 15:15:20
○ 2026-02-23 05:15:44
○ 2026-03-24 03:38:32

○NSns-987.awsdns-59.net2018-01-23 → 2018-01-23 · 3 obs

● 2018-01-23 15:15:20
○ 2026-02-23 05:15:44
○ 2026-03-24 03:38:32

●NSshades09.rzone.de2026-02-23 → 2026-03-24 · 3 obs

○ 2018-01-23 15:15:20
● 2026-02-23 05:15:44
● 2026-03-24 03:38:32

●MXsmtpin.rzone.de2026-02-23 → 2026-03-24 · 2 obs

● 2026-02-23 05:15:44
● 2026-03-24 03:38:32

●A2a01:238:20a:202:1163::2026-02-23 → 2026-03-24 · 2 obs

● 2026-02-23 05:15:44
● 2026-03-24 03:38:32

●A81.169.145.1632026-02-23 → 2026-03-24 · 2 obs

● 2026-02-23 05:15:44
● 2026-03-24 03:38:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, b.gtld-servers.net, e.gtld-servers.net, l.gtld-servers.net...	-
dental-masterclass.com	shades09.rzone.de, docks15.rzone.de	-

✅ Authoritative Response

Server:217.160.80.142

NS records: shades09.rzone.de, docks15.rzone.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dental-masterclass.com (unsigned zone)

⏱️ Timing

Total: 644ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.169.145.163`
AAAA	1	`2a01:238:20a:202:1163::`
NS	2	`docks15.rzone.de, shades09.rzone.de`
MX	1	`smtpin.rzone.de (pri: 5)`
SOA	1	`shades09.rzone.de hostmaster.strato-rz.d`

Analysis

Hierarchy

dental-masterclass.com is the parent of www.dental-masterclass.com.

IP Addresses

dental-masterclass.com resolves to two IP numbers: 2a01:238:20a:202:1163:: and 81.169.145.163.

Other host names, for instance nescher.de, gastronomie-reinigungs-service.de, fitnesstanz.de, softbend.de and trulle.de share IP numbers with dental-masterclass.com.

Name Servers

dental-masterclass.com has two name servers: docks15.rzone.de and shades09.rzone.de.

dental-masterclass.com shares the same name server setup as other domains, for example kino-kelkheim.de, nettkai.net, doingwell.eu, frankhartwich.de and kanzlei-demacker.de.

dental-masterclass.com shares some name servers with other domains, for example zappe.biz, alfadrive.eu, hightec52.de, straat.se and haertelwald.de.

these name servers are often used with docks14.rzone.de, docks19.rzone.de, shades03.rzone.de, shades12.rzone.de, shades04.rzone.de, docks04.rzone.de, shades13.rzone.de, docks03.rzone.de, shades18.rzone.de and shades02.rzone.de.

Host names with two IP numbers:

docks15.rzone.de points to: 2001:8d8:fe:53:5747:2a74:d:15 and 217.160.80.142; shades09.rzone.de points to: 2607:f1c0:fe:53:185:132:34:136 and 185.132.34.136.

Mail Servers

dental-masterclass.com is handled by a single mail server, smtpin.rzone.de.

dental-masterclass.com shares the mail server setup with other domains, for example www.winkler-industrietechnik.de, willemkokkeel.com, kaita.de, kantcafe.de and maltamina.com.

smtpin.rzone.de resolves to two IPs: 2a01:238:20a:202:50f0::1097 and 81.169.145.97.

dental-masterclass.com - robtex.com