`backoffice-dortmund.com`

DNSSEC	⚠️ Not signed
A	2001:8d8:100f:f000::200^{🇩🇪 IONOS-AS2001:8d8::/32 DE-IONOS-20020910}
		PTR	`2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com`
A	217.160.0.230^{🇩🇪 IONOS-AS217.160.0.0/16 IONOS-PA-3}
NS	`docks12.rzone.de` ⭐
		A	2001:8d8:fe:53:5747:2a74:d:12^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`docks12.rzone.de`
		A	217.160.80.139^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`docks12.rzone.de`
NS	`shades10.rzone.de`
		A	2607:f1c0:fe:53:185:132:34:137^{🇺🇸 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	`shades10.rzone.de`
		A	185.132.34.137^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`shades10.rzone.de`
MX	`smtpin.rzone.de` ⭐
		A	2a01:238:20a:202:50f0::1097^{🇩🇪 STRATO2a01:238:20a::/48 Strato AG}
		A	81.169.145.97^{🇩🇪 STRATO81.169.144.0/22 AG}
			PTR	`smtpin.rzone.de`
SOA	`docks12.rzone.de`hostmaster@strato-rz.de 2020-06-28 #16

`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=1775410657

Subdomains

mail.backoffice-dortmund.com

Same first word

backoffice-dortmund.net

backoffice-dortmund.org

backoffice-dortmund.expert

backoffice-dortmund.de

backoffice-dortmund.works

backoffice-dortmund.eu

backoffice-dortmund.com

backoffice-dortmund.wiki

DNS History

11 records (5 active, 6 former)

●NSdocks12.rzone.de2026-04-02 → 2026-04-05 · 3 obs

○ 2017-04-01 20:00:54
● 2026-04-02 17:32:36
● 2026-04-05 17:56:36

○NSns01.1blu.de2015-06-14 → 2017-04-01 · 4 obs

● 2015-06-14 02:32:28
● 2017-04-01 20:00:54
○ 2026-04-02 17:32:36
○ 2026-04-05 17:56:36

○NSns02.1blu.de2015-06-14 → 2017-04-01 · 4 obs

● 2015-06-14 02:32:28
● 2017-04-01 20:00:54
○ 2026-04-02 17:32:36
○ 2026-04-05 17:56:36

●NSshades10.rzone.de2026-04-02 → 2026-04-05 · 3 obs

○ 2017-04-01 20:00:54
● 2026-04-02 17:32:36
● 2026-04-05 17:56:36

○MXmail.backoffice-dortmund.com2015-06-14 → 2017-04-01 · 4 obs

● 2015-06-14 02:32:28
● 2017-04-01 20:00:54
○ 2026-04-02 17:32:36
○ 2026-04-05 17:56:36

●MXsmtpin.rzone.de2026-04-02 → 2026-04-05 · 3 obs

○ 2017-04-01 20:00:54
● 2026-04-02 17:32:36
● 2026-04-05 17:56:36

○A178.254.11.312015-06-14 → 2017-04-01 · 4 obs

● 2015-06-14 02:32:28
● 2017-04-01 20:00:54
○ 2026-04-02 17:32:36
○ 2026-04-05 17:56:36

●A2001:8d8:100f:f000::2002026-04-02 → 2026-04-05 · 3 obs

○ 2017-04-01 20:00:54
● 2026-04-02 17:32:36
● 2026-04-05 17:56:36

●A217.160.0.2302026-04-02 → 2026-04-05 · 3 obs

○ 2017-04-01 20:00:54
● 2026-04-02 17:32:36
● 2026-04-05 17:56:36

○A2a01:238:20a:202:1163::2026-04-02 → 2026-04-05 · 2 obs

○ 2026-04-02 17:32:36
○ 2026-04-05 17:56:36

○A81.169.145.1632026-04-02 → 2026-04-05 · 2 obs

○ 2026-04-02 17:32:36
○ 2026-04-05 17:56:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
backoffice-dortmund.com	shades10.rzone.de, docks12.rzone.de	-

✅ Authoritative Response

Server:217.160.80.139

NS records: shades10.rzone.de, docks12.rzone.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for backoffice-dortmund.com (unsigned zone)

⏱️ Timing

Total: 535ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`217.160.0.230`
AAAA	1	`2001:8d8:100f:f000::200`
NS	2	`docks12.rzone.de, shades10.rzone.de`
MX	1	`smtpin.rzone.de (pri: 5)`
SOA	1	`docks12.rzone.de hostmaster.strato-rz.de`

Analysis

Hierarchy

The parent of mail.backoffice-dortmund.com is backoffice-dortmund.com.

IP Addresses

backoffice-dortmund.com points to two IP numbers: 2001:8d8:100f:f000::200 and 217.160.0.230.

Other host names such as g2tech.fr, monaudire.mobi, menk.de, parfumfrei.de and 2xb.fr share IPs with backoffice-dortmund.com.

Name Servers

Two name servers docks12.rzone.de and shades10.rzone.de handle the delegation for backoffice-dortmund.com.

backoffice-dortmund.com shares the same name server setup as other domains, for example pd-id.de, polaris3d.de, strato-ausbildung.de, optopia.de and agdev.de.

backoffice-dortmund.com at least partially shares name servers with other domains, for example sd-ing.de, hgc-exclusive.com, fietsonderdelenoutlet.nl, handyparadies-giessen.de and mein-medicus.de.

these name servers are commonly used with the following name servers: docks10.rzone.de, shades03.rzone.de, shades12.rzone.de, docks08.rzone.de, docks13.rzone.de, docks18.rzone.de, shades20.rzone.de, shades19.rzone.de, docks17.rzone.de and docks15.rzone.de.

Host names with two IP numbers:

docks12.rzone.de points to 2001:8d8:fe:53:5747:2a74:d:12 and 217.160.80.139.

shades10.rzone.de points to 2607:f1c0:fe:53:185:132:34:137 and 185.132.34.137.

Mail Servers

The smtpin.rzone.de mail server handles backoffice-dortmund.com.

backoffice-dortmund.com shares the same mail server setup as other domains, including see-service.de, sofortrechnen.de, michaelwalther.net, gchm.de and 8along.com.

smtpin.rzone.de points to two IP numbers: 2a01:238:20a:202:50f0::1097 and 81.169.145.97.

backoffice-dortmund.com - robtex.com