`mail.backyardengineering.com`

DNSSEC	⚠️ Not signed
A	2600:3c01:e000:1ae::1^{🇺🇸 AKAMAI-LINODE-AP2600:3c01::/32 Akamai Technologies}
		PTR	`backyardengineering.com`
A	104.200.25.136^{🇺🇸 AKAMAI-LINODE-AP104.200.24.0/22 Akamai Technologies}

`backyardengineering.com`

	DNSSEC	⚠️ Not signed
	A	2600:3c01:e000:1ae::1^{🇺🇸 AKAMAI-LINODE-AP2600:3c01::/32 Akamai Technologies}
	A	104.200.25.136^{🇺🇸 AKAMAI-LINODE-AP104.200.24.0/22 Akamai Technologies}
	NS	`ns1.linode.com` ⭐
	NS	`ns1.he.net` ⚠️ Not in zone NS records
	NS	`ns2.linode.com`
	NS	`ns3.he.net` ⚠️ Not in zone NS records
	NS	`ns3.linode.com`
	NS	`ns4.linode.com`
	NS	`ns5.he.net` ⚠️ Not in zone NS records
	NS	`ns5.linode.com`
	MX	`mail.backyardengineering.com` ⭐
	TXT	`v=spf1 a mx include:backyardengineering.us include:rx7.org ~all`
	TXT	`google-site-verification=JT_TAeRpacLGdQxrnaCsSFelat5B3SUgJLOJbcRc2dw`
	SOA	`ns1.linode.com`DomainAdmin@rx7.org serial=2021000006

MX for

backyardengineering.com

Same first word

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DNS History

4 records (2 active, 2 former)

●A104.200.25.1362015-07-20 → 2026-03-24 · 3 obs

○ 2007-11-28 06:52:16
● 2015-07-20 15:40:14
● 2026-03-24 23:22:18

○A208.109.197.1432007-11-28 → 2007-11-28 · 3 obs

● 2007-11-28 06:52:16
○ 2015-07-20 15:40:14
○ 2026-03-24 23:22:18

○A2600:3c01::f03c:91ff:fe56:cf372015-07-20 → 2016-03-19 · 5 obs

○ 2007-11-28 06:52:16
● 2015-07-20 15:40:14
● 2016-03-19 02:45:54
○ 2016-09-20 20:38:40
○ 2026-03-24 23:22:18

●A2600:3c01:e000:1ae::12016-09-20 → 2026-03-24 · 3 obs

○ 2016-03-19 02:45:54
● 2016-09-20 20:38:40
● 2026-03-24 23:22:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
backyardengineering.com	ns1.he.net, ns3.he.net, ns1.linode.com, ns2.linode.com...	10 records

✅ Authoritative Response

Server:216.218.130.2

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for backyardengineering.com (unsigned zone)

⏱️ Timing

Total: 405ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`104.200.25.136`
AAAA	1	`2600:3c01:e000:1ae::1`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns1.linode.com, ns1.linode.com, ns2.linode.com...)

Analysis

Mail Server Role

mail.backyardengineering.com is the mail server for backyardengineering.com.

IP Addresses

mail.backyardengineering.com points to two IPs: 2600:3c01:e000:1ae::1 and 104.200.25.136.

Other host names such as xoanon.backyardengineering.us, mail.backyardengineering.us, backyardengineering.us and backyardengineering.com share IP numbers with mail.backyardengineering.com.

mail.backyardengineering.com - robtex.com