`concentro-management.com`

DNSSEC	⚠️ Not signed
A	2001:8d8:100f:f000::291^{🇩🇪 IONOS-AS2001:8d8::/32 DE-IONOS-20020910}
		PTR	`2001-08d8-100f-f000-0000-0000-0000-0291.elastic-ssl.ui-r.com`
A	217.160.0.146^{🇩🇪 IONOS-AS217.160.0.0/16 IONOS-PA-3}
NS	`ns1051.ui-dns.biz` ⭐
		A	2001:8d8:fe:53:0:d9a0:5133:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1051.ui-dns.biz`
		A	217.160.81.51^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1051.ui-dns.biz`
NS	`ns1051.ui-dns.com`
		A	2001:8d8:fe:53:0:d9a0:5233:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1051.ui-dns.com`
		A	217.160.82.51^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1051.ui-dns.com`
NS	`ns1051.ui-dns.de`
		A	2001:8d8:fe:53:0:d9a0:5033:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1051.ui-dns.de`
		A	217.160.80.51^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1051.ui-dns.de`
NS	`ns1051.ui-dns.org`
		A	2001:8d8:fe:53:0:d9a0:5333:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1051.ui-dns.org`
		A	217.160.83.51^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1051.ui-dns.org`
MX	`mx00.ionos.de` ⭐
		A	212.227.15.41^{🇩🇪 IONOS-AS212.227.0.0/16 IONOS-PA-2}
			PTR	`mx00.kundenserver.de`
MX	`mx01.ionos.de` ⭐
		A	217.72.192.67^{🇩🇪 IONOS-AS217.72.192.0/20 Web.de}
			PTR	`mx01.kundenserver.de`
TXT	`v=spf1 include:_spf-eu.ionos.com ~all`
SOA	`ns1051.ui-dns.biz`hostmaster@1und1.de 2017-05-02 #5

`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=1774872972

Same first word

concentro-management.com

DNS History

16 records (8 active, 8 former)

●NSns1051.ui-dns.biz2018-09-02 → 2026-03-30 · 3 obs

○ 2017-02-07 12:38:26
● 2018-09-02 15:03:52
● 2026-03-30 12:26:28

●NSns1051.ui-dns.com2018-09-02 → 2026-03-30 · 3 obs

○ 2017-02-07 12:38:26
● 2018-09-02 15:03:52
● 2026-03-30 12:26:28

●NSns1051.ui-dns.de2018-09-02 → 2026-03-30 · 3 obs

○ 2017-02-07 12:38:26
● 2018-09-02 15:03:52
● 2026-03-30 12:26:28

●NSns1051.ui-dns.org2018-09-02 → 2026-03-30 · 3 obs

○ 2017-02-07 12:38:26
● 2018-09-02 15:03:52
● 2026-03-30 12:26:28

○NSns65.1und1.de2015-07-03 → 2017-02-07 · 4 obs

● 2015-07-03 13:31:46
● 2017-02-07 12:38:26
○ 2018-09-02 15:03:52
○ 2026-03-30 12:26:28

○NSns66.1und1.de2015-07-03 → 2017-02-07 · 4 obs

● 2015-07-03 13:31:46
● 2017-02-07 12:38:26
○ 2018-09-02 15:03:52
○ 2026-03-30 12:26:28

●MXmx00.ionos.de2026-03-27 → 2026-03-30 · 3 obs

○ 2018-09-02 15:03:52
● 2026-03-27 00:07:36
● 2026-03-30 12:26:28

○MXmx00.kundenserver.de2015-07-03 → 2018-09-02 · 4 obs

● 2015-07-03 13:31:46
● 2018-09-02 15:03:52
○ 2026-03-27 00:07:36
○ 2026-03-30 12:26:28

●MXmx01.ionos.de2026-03-27 → 2026-03-30 · 3 obs

○ 2018-09-02 15:03:52
● 2026-03-27 00:07:36
● 2026-03-30 12:26:28

○MXmx01.kundenserver.de2015-07-03 → 2018-09-02 · 4 obs

● 2015-07-03 13:31:46
● 2018-09-02 15:03:52
○ 2026-03-27 00:07:36
○ 2026-03-30 12:26:28

○A2001:8d8:1000:3058:3cc5:378a:9e71:e01c2016-06-23 → 2017-02-07 · 5 obs

○ 2016-02-11 09:04:46
● 2016-06-23 19:40:54
● 2017-02-07 12:38:26
○ 2018-09-02 15:03:52
○ 2026-03-30 12:26:28

○A2001:8d8:1000:3058:fb66:7255:3ccb:70612015-07-03 → 2016-02-11 · 4 obs

● 2015-07-03 13:31:46
● 2016-02-11 09:04:46
○ 2016-06-23 19:40:54
○ 2026-03-30 12:26:28

●A2001:8d8:100f:f000::2912018-09-02 → 2026-03-30 · 3 obs

○ 2017-02-07 12:38:26
● 2018-09-02 15:03:52
● 2026-03-30 12:26:28

●A217.160.0.1462018-09-02 → 2026-03-30 · 3 obs

○ 2017-02-07 12:38:26
● 2018-09-02 15:03:52
● 2026-03-30 12:26:28

○A217.160.231.1762016-06-23 → 2017-02-07 · 5 obs

○ 2016-02-11 09:04:46
● 2016-06-23 19:40:54
● 2017-02-07 12:38:26
○ 2018-09-02 15:03:52
○ 2026-03-30 12:26:28

○A82.165.100.1782015-07-03 → 2016-02-11 · 4 obs

● 2015-07-03 13:31:46
● 2016-02-11 09:04:46
○ 2016-06-23 19:40:54
○ 2026-03-30 12:26:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, a.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net...	-
concentro-management.com	ns1051.ui-dns.de, ns1051.ui-dns.biz, ns1051.ui-dns.org, ns1051.ui-dns.com	2 records

✅ Authoritative Response

Server:217.160.82.51

NS records: ns1051.ui-dns.de, ns1051.ui-dns.biz, ns1051.ui-dns.org, ns1051.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for concentro-management.com (unsigned zone)

⏱️ Timing

Total: 520ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`217.160.0.146`
AAAA	1	`2001:8d8:100f:f000::291`
NS	4	`ns1051.ui-dns.com, ns1051.ui-dns.org...`
MX	2	`mx01.ionos.de (pri: 10), mx00.ionos.de (pri: 10)`
TXT	1	`v=spf1 include:_spf-eu.ionos.com ~all`
SOA	1	`ns1051.ui-dns.biz hostmaster.1und1.de`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1051.ui-dns.com, ns1051.ui-dns.com)

Analysis

IP Addresses

concentro-management.com resolves to two IP numbers: 2001:8d8:100f:f000::291 and 217.160.0.146.

Other host names, for instance sgkl.de, quenno.com, augenlasern-in-hamburg.de, nagel-reisen.com and s594494282.mialojamiento.es share IP numbers with concentro-management.com.

Name Servers

concentro-management.com's delegation is handled by four name servers: ns1051.ui-dns.biz, ns1051.ui-dns.com, ns1051.ui-dns.de and ns1051.ui-dns.org.

concentro-management.com partially shares name servers with other domains; examples include biergarten-trappensee.de, guenstig-und-schlau.de, kassel-immobilien.info, limettenpresse.de and bicma.eu.

These name servers are commonly used with ns1083.ui-dns.de, ns1095.ui-dns.biz, ns1052.ui-dns.org, ns1079.ui-dns.com, ns1038.ui-dns.de and ns1108.ui-dns.org.

Host names with two IPs:

ns1051.ui-dns.biz points to 2001:8d8:fe:53:0:d9a0:5133:100 and 217.160.81.51

ns1051.ui-dns.com points to 2001:8d8:fe:53:0:d9a0:5233:100 and 217.160.82.51

ns1051.ui-dns.de points to 2001:8d8:fe:53:0:d9a0:5033:100 and 217.160.80.51

ns1051.ui-dns.org points to 2001:8d8:fe:53:0:d9a0:5333:100 and 217.160.83.51

Mail Servers

concentro-management.com is handled by two mail servers: mx00.ionos.de and mx01.ionos.de.

concentro-management.com has the same mail server setup as other domains, including android-forum.de, hausverwaltungen-brenner.de, ferienwohnung-pempelforth.de, weihnachtsgaense.com and 360bit.com.

Host names with one IP number: The host name mx00.ionos.de points to 212.227.15.41 and the host name mx01.ionos.de points to 217.72.192.67.

concentro-management.com - robtex.com