`centerofefficiency.com`

DNSSEC	⚠️ Not signed
A	2a01:4f8:200:51ec::2^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
		PTR	`centerofefficiency.com`
A	144.76.173.237^{🇩🇪 Hetzner144.76.0.0/16 HETZNER-RZ-BLK-ERX1}
NS	`ns1.mainns.de` ⭐
		A	2001:67c:1bc::21^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast}
			PTR	`ns1.mainns.de`
		A	192.174.68.21^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net}
			PTR	`ns1.mainns.de`
NS	`ns2.mainns.eu`
		A	2001:67c:10b8::21^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns2.mainns.eu`
		A	176.97.158.21^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns2.mainns.eu`
NS	`ns3.mainns.net`
		A	2001:67c:1bc::20^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast}
			PTR	`ns3.mainns.net`
		A	192.174.68.20^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net}
			PTR	`ns3.mainns.net`
MX	`centerofefficiency-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca27::^{🇩🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-beup281cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca2d::^{🇩🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-fr5p281cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:ca2d::1^{🇩🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-fr4p281cu03101.inbound.protection.outlook.com`
		A	2a01:111:f403:ca2d::2^{🇩🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-fr6p281cu00202.inbound.protection.outlook.com`
		A	52.101.168.0^{🇩🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-beup281cu00100.inbound.protection.outlook.com`
		A	52.101.170.0^{🇩🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-fr5p281cu00500.inbound.protection.outlook.com`
		A	52.101.170.1^{🇩🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-fr4p281cu03101.inbound.protection.outlook.com`
		A	52.101.170.2^{🇩🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-fr6p281cu00202.inbound.protection.outlook.com`
TXT	`MS=ms98737439`
TXT	`MS=DEAB0859022629CA1052F5D2F5D72FABE8DCFB2B`
TXT	`google-site-verification=Rcp6vPBNfVMRw6XoxO5Po2KXJrfh8IGUDwaNuKiC8hA`
TXT	`v=spf1 a:centerofefficiency.com ip4:144.76.173.237 ip6:2a01:4f8:200:51ec:: in...`
SOA	`ns1.mainns.de`info@domains.resellerinterface.de serial=1768196373

`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=1784427292

PTR for

237.173.76.144.in-addr.arpa

2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.c.e.1.5.0.0.2.0.8.f.4.0.1.0.a.2.ip6.arpa

Same first word

centerofefficiency.com

centerofefficiency.de

DNS History

11 records (6 active, 5 former)

○NSns1.domainoffensive.de2015-05-30 → 2019-03-23 · 5 obs

● 2015-05-30 16:11:20
● 2015-10-20 05:10:54
○ 2015-12-22 19:45:24
● 2019-03-23 20:59:52
○ 2026-07-19 02:40:12

●NSns1.mainns.de2026-07-19 → 2026-07-19 · 2 obs

○ 2019-03-23 20:59:52
● 2026-07-19 02:40:12

○NSns2.domainoffensive.de2015-05-30 → 2019-03-23 · 3 obs

● 2015-05-30 16:11:20
● 2019-03-23 20:59:52
○ 2026-07-19 02:40:12

●NSns2.mainns.eu2026-07-19 → 2026-07-19 · 2 obs

○ 2019-03-23 20:59:52
● 2026-07-19 02:40:12

○NSns3.domainoffensive.de2015-10-20 → 2019-03-23 · 4 obs

○ 2015-05-30 16:11:20
● 2015-10-20 05:10:54
● 2019-03-23 20:59:52
○ 2026-07-19 02:40:12

●NSns3.mainns.net2026-07-19 → 2026-07-19 · 2 obs

○ 2019-03-23 20:59:52
● 2026-07-19 02:40:12

●MXcenterofefficiency-com.mail.protection.outlook.com2026-07-19 → 2026-07-19 · 2 obs

○ 2019-03-23 20:59:52
● 2026-07-19 02:40:12

○MXmail.centerofefficiency.com2015-05-30 → 2019-03-23 · 3 obs

● 2015-05-30 16:11:20
● 2019-03-23 20:59:52
○ 2026-07-19 02:40:12

●A144.76.173.2372015-05-30 → 2026-07-19 · 2 obs

● 2015-05-30 16:11:20
● 2026-07-19 02:40:12

○A2a01:4f8:200:51ec::2015-05-30 → 2019-03-23 · 3 obs

● 2015-05-30 16:11:20
● 2019-03-23 20:59:52
○ 2026-07-19 02:40:12

●A2a01:4f8:200:51ec::22026-07-19 → 2026-07-19 · 2 obs

○ 2019-03-23 20:59:52
● 2026-07-19 02:40:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, i.gtld-servers.net, e.gtld-servers.net, c.gtld-servers.net...	-
centerofefficiency.com	ns1.mainns.de, ns2.mainns.eu, ns3.mainns.net	-

✅ Authoritative Response

Server:192.174.68.20

NS records: ns1.mainns.de, ns2.mainns.eu, ns3.mainns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for centerofefficiency.com (unsigned zone)

⏱️ Timing

Total: 417ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`144.76.173.237`
AAAA	1	`2a01:4f8:200:51ec::2`
NS	3	`ns1.mainns.de, ns2.mainns.eu...`
MX	1	`centerofefficiency-com.mail.protection.o`
TXT	4	`MS=ms98737439, MS=DEAB0859022629CA1052F5D2F5D72FABE8DCF...`
SOA	1	`ns1.mainns.de info.domains.resellerinter`

Analysis

IP Addresses

centerofefficiency.com directs to two IP numbers, 144.76.173.237 and 2a01:4f8:200:51ec::2

centerofefficiency.de and mail.centerofefficiency.de, along with other host names, share IP addresses with centerofefficiency.com.

Name Servers

centerofefficiency.com carries NS records delegating to ns1.mainns.de, ns2.mainns.eu and ns3.mainns.net.

centerofefficiency.com partially shares its NS delegation with several other domains, including webservercheck.de, gironimo.com, single-club-reisen.de and two others.

ns1.mainns.de, ns2.mainns.eu and ns3.mainns.net are three hostnames that each resolve to a pair of IP addresses: ns1.mainns.de to 192.174.68.21 and 2001:67c:1bc::21, ns2.mainns.eu to 176.97.158.21 and 2001:67c:10b8::21, and ns3.mainns.net to 192.174.68.20 and 2001:67c:1bc::20.

Mail Servers

The sole mail server for centerofefficiency.com is centerofefficiency-com.mail.protection.outlook.com.

With 8 IP addresses total, centerofefficiency-com.mail.protection.outlook.com resolves to 52.101.168.0, 52.101.170.0, 52.101.170.1 and 5 others.

centerofefficiency.com - robtex.com