`duffertek.com`

DNSSEC	⚠️ Not signed
A	207.2.121.148^{🇺🇸 LAYER207.2.121.0/24 Coventry, England, United Kingdom}
		PTR	`blip.mattday.net`
NS	`ns1.he.net` ⭐
		A	2001:470:100::2^{🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns1.he.net`
		A	216.218.130.2^{🇺🇸 HURRICANE216.218.128.0/17 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns1.he.net`
NS	`ns2.he.net`
		A	2001:470:200::2^{🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns2.he.net`
		A	216.218.131.2^{🇺🇸 HURRICANE216.218.128.0/17 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns2.he.net`
NS	`ns3.he.net`
		A	2001:470:300::2^{🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns3.he.net`
		A	216.218.132.2^{🇺🇸 HURRICANE216.218.128.0/17 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns3.he.net`
NS	`ns4.he.net`
		A	2001:470:400::2^{🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns4.he.net`
		A	216.66.1.2^{🇺🇸 HURRICANE216.66.0.0/19 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns4.he.net`
NS	`ns5.he.net`
		A	2001:470:500::2^{🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns5.he.net`
		A	216.66.80.18^{🇺🇸 HURRICANE216.66.80.0/20 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns5.he.net`
MX	`mail.duffertek.com` ⭐
		A	149.255.96.137^{🇬🇧 IOMART-AS149.255.96.0/22 OpenITC}
			PTR	`donkey.mattday.net`
TXT	`v=spf1 a mx ip4:149.255.96.137 ip4:62.182.97.57 ip4:207.2.121.148 ip6:2a04:92...`
TXT	`brevo-code:699f1a82773f743c15aecfa622000964`
SOA	`ns1.he.net`hostmaster@he.net 2025-01-05 #3

`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=1774865612

Previously MX for

duffertek.com

Subdomains

mail.duffertek.com

Same first word

duffertek.com

DNS History

17 records (7 active, 10 former)

○NSns.microlite1.com2016-05-03 → 2017-01-08 · 5 obs

○ 2016-02-13 02:19:04
● 2016-05-03 18:59:28
● 2017-01-08 09:19:38
○ 2018-08-25 17:17:48
○ 2026-03-30 10:40:58

●NSns1.he.net2018-08-25 → 2026-03-30 · 3 obs

○ 2017-01-08 09:19:38
● 2018-08-25 17:17:48
● 2026-03-30 10:40:58

○NSns1.kualo.net2015-07-18 → 2016-02-13 · 4 obs

● 2015-07-18 06:06:26
● 2016-02-13 02:19:04
○ 2016-05-03 18:59:28
○ 2026-03-30 10:40:58

●NSns2.he.net2018-08-25 → 2026-03-30 · 3 obs

○ 2017-01-08 09:19:38
● 2018-08-25 17:17:48
● 2026-03-30 10:40:58

○NSns2.kualo.net2015-07-18 → 2016-02-13 · 4 obs

● 2015-07-18 06:06:26
● 2016-02-13 02:19:04
○ 2016-05-03 18:59:28
○ 2026-03-30 10:40:58

○NSns2.microlite1.com2016-05-03 → 2017-01-08 · 5 obs

○ 2016-02-13 02:19:04
● 2016-05-03 18:59:28
● 2017-01-08 09:19:38
○ 2018-08-25 17:17:48
○ 2026-03-30 10:40:58

●NSns3.he.net2018-08-25 → 2026-03-30 · 3 obs

○ 2017-01-08 09:19:38
● 2018-08-25 17:17:48
● 2026-03-30 10:40:58

○NSns3.kualo.net2015-07-18 → 2016-02-13 · 4 obs

● 2015-07-18 06:06:26
● 2016-02-13 02:19:04
○ 2016-05-03 18:59:28
○ 2026-03-30 10:40:58

●NSns4.he.net2018-08-25 → 2026-03-30 · 3 obs

○ 2017-01-08 09:19:38
● 2018-08-25 17:17:48
● 2026-03-30 10:40:58

○NSns4.kualo.net2015-07-18 → 2016-02-13 · 4 obs

● 2015-07-18 06:06:26
● 2016-02-13 02:19:04
○ 2016-05-03 18:59:28
○ 2026-03-30 10:40:58

●NSns5.he.net2018-08-25 → 2026-03-30 · 3 obs

○ 2017-01-08 09:19:38
● 2018-08-25 17:17:48
● 2026-03-30 10:40:58

○MXduffertek.com2015-07-18 → 2016-02-13 · 4 obs

● 2015-07-18 06:06:26
● 2016-02-13 02:19:04
○ 2016-05-03 18:59:28
○ 2026-03-30 10:40:58

●MXmail.duffertek.com2016-05-03 → 2026-03-30 · 3 obs

○ 2016-02-13 02:19:04
● 2016-05-03 18:59:28
● 2026-03-30 10:40:58

○A149.255.108.292015-07-18 → 2017-01-08 · 4 obs

● 2015-07-18 06:06:26
● 2017-01-08 09:19:38
○ 2018-08-25 17:17:48
○ 2026-03-30 10:40:58

○A185.164.136.642018-08-25 → 2018-08-25 · 4 obs

○ 2017-01-08 09:19:38
● 2018-08-25 17:17:48
○ 2020-06-28 01:36:46
○ 2026-03-30 10:40:58

○A185.187.154.852020-06-28 → 2020-06-28 · 4 obs

○ 2018-08-25 17:17:48
● 2020-06-28 01:36:46
○ 2026-02-23 05:09:32
○ 2026-03-30 10:40:58

●A207.2.121.1482026-02-23 → 2026-03-30 · 3 obs

○ 2020-06-28 01:36:46
● 2026-02-23 05:09:32
● 2026-03-30 10:40:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
duffertek.com	ns1.he.net, ns2.he.net, ns3.he.net, ns4.he.net...	-

✅ Authoritative Response

Server:216.66.80.18

NS records: ns1.he.net, ns2.he.net, ns3.he.net, ns4.he.net, ns5.he.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for duffertek.com (unsigned zone)

⏱️ Timing

Total: 399ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`207.2.121.148`
NS	5	`ns5.he.net, ns3.he.net...`
MX	1	`mail.duffertek.com (pri: 10)`
TXT	2	`v=spf1 a mx ip4:149.255.96.137 ip4:62.18, brevo-code:699f1a82773f743c15aecfa622000`
SOA	1	`ns1.he.net hostmaster.he.net`

Analysis

Hierarchy

duffertek.com is a parent of mail.duffertek.com.

IP Addresses

duffertek.com points to a single IP number: 207.2.121.148.

Other host names, for instance blip.mattday.net, share IP numbers with duffertek.com.

Name Servers

duffertek.com is delegated to five name servers: ns1.he.net, ns2.he.net, ns3.he.net, ns4.he.net and ns5.he.net.

duffertek.com at least partially shares name servers with other domains, for instance nira.ro, dermatonet.ro, dracon.is, bortola.to.it and dyn.nabber.org.

Host names with two IP numbers:

ns1.he.net points to 2001:470:100::2 and 216.218.130.2.

ns2.he.net points to 2001:470:200::2 and 216.218.131.2.

ns3.he.net points to 2001:470:300::2 and 216.218.132.2.

ns4.he.net points to 2001:470:400::2 and 216.66.1.2.

ns5.he.net points to 2001:470:500::2 and 216.66.80.18.

Mail Servers

duffertek.com is handled by a single mail server, mail.duffertek.com.

mail.duffertek.com points to a single IP: 149.255.96.137.

duffertek.com - robtex.com

duffertek.com

com

Previously MX for

Subdomains

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`duffertek.com`

`com`