`mailserver.concentric-it.com`

	DNSSEC	⚠️ Not signed
	A	2a07:7800::163^{🇬🇧 TWENTYI2a07:7800::/48}
	A	185.151.30.163^{🇬🇧 TWENTYI185.151.30.0/24}

`concentric-it.com`

	DNSSEC	⚠️ Not signed
	A	2a07:7800::163^{🇬🇧 TWENTYI2a07:7800::/48}
	A	185.151.30.163^{🇬🇧 TWENTYI185.151.30.0/24}
	NS	`ns1.stackdns.com` ⭐
	NS	`ns2.stackdns.com`
	NS	`ns3.stackdns.com`
	NS	`ns4.stackdns.com`
	MX	`mx.stackmail.com` ⭐
	TXT	`v=spf1 include:spf.stackmail.com a mx -all`
	SOA	`ns1.stackdns.com`hostmaster@stackdns.com serial=1681286845

Same first word

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Similar names

DNS History

5 records (2 active, 3 former)

○MXmail.concentric-it.com2015-08-02 → 2016-06-26 · 5 obs

○ 2007-11-30 10:18:20
● 2015-08-02 18:38:30
● 2016-06-26 14:59:00
○ 2026-04-06 20:54:48
○ 2026-05-10 12:35:50

●A185.151.30.1632026-04-06 → 2026-05-10 · 3 obs

○ 2016-06-26 14:59:00
● 2026-04-06 20:54:48
● 2026-05-10 12:35:50

○A213.171.216.1162007-11-30 → 2007-11-30 · 3 obs

● 2007-11-30 10:18:20
○ 2015-08-02 18:38:30
○ 2026-05-10 12:35:50

●A2a07:7800::1632026-04-06 → 2026-05-10 · 3 obs

○ 2016-06-26 14:59:00
● 2026-04-06 20:54:48
● 2026-05-10 12:35:50

○A79.170.44.1262015-08-02 → 2016-06-26 · 5 obs

○ 2007-11-30 10:18:20
● 2015-08-02 18:38:30
● 2016-06-26 14:59:00
○ 2026-04-06 20:54:48
○ 2026-05-10 12:35:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
concentric-it.com	ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com, ns4.stackdns.com	4 records

✅ Authoritative Response

Server:104.196.137.209

NS records: ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com, ns4.stackdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for concentric-it.com (unsigned zone)

⏱️ Timing

Total: 151ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.151.30.163`
AAAA	1	`2a07:7800::163`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com...)

Analysis

IP Addresses

mailserver.concentric-it.com points to two IPs: 2a07:7800::163 and 185.151.30.163.

Other host names including falconry-displays.com, ns.bostongilmore.co.uk, sites.firefli.uk, mx.harrisonfabrication.co.uk and slinnallstars.co.uk share IP numbers with mailserver.concentric-it.com.

mailserver.concentric-it.com - robtex.com