`mail.backyardengineering.us`

DNSSEC	⚠️ Not signed
A	2600:3c01::f03c:91ff:fe56:cf37^{🇺🇸 AKAMAI-LINODE-AP2600:3c01::/32 Akamai Technologies}
		PTR	`xoanon.backyardengineering.us`
A	104.200.25.136^{🇺🇸 AKAMAI-LINODE-AP104.200.24.0/22 Akamai Technologies}

`backyardengineering.us`

	DNSSEC	⚠️ Not signed
	A	2600:3c01::f03c:91ff:fe56:cf37^{🇺🇸 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.us` ⭐
	TXT	`v=spf1 a mx ip4:104.200.25.136 ip6:2600:3c01:e000:1ae::1 ip6:2600:3c01::f03c...`
	SOA	`ns1.linode.com`DomainAdmin@rx7.org serial=2021000003

MX for

backyardengineering.us

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DNS History

2 records (2 active, 0 former)

●A104.200.25.1362015-07-11 → 2026-03-24 · 2 obs

● 2015-07-11 20:49:44
● 2026-03-24 21:58:36

●A2600:3c01::f03c:91ff:fe56:cf372015-07-11 → 2026-03-24 · 2 obs

● 2015-07-11 20:49:44
● 2026-03-24 21:58:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
us	b.cctld.us, f.cctld.us, k.cctld.us, m.cctld.us...	-
backyardengineering.us	ns1.he.net, ns3.linode.com, ns5.he.net, ns2.linode.com...	-

✅ Authoritative Response

Server:216.218.132.2

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for backyardengineering.us (unsigned zone)

⏱️ Timing

Total: 727ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`104.200.25.136`
AAAA	1	`2600:3c01::f03c:91ff:fe56:cf37`

Analysis

Mail Server Role

mail.backyardengineering.us functions as a mail server for backyardengineering.us.

IP Addresses

mail.backyardengineering.us points to two IP numbers: 2600:3c01::f03c:91ff:fe56:cf37 and 104.200.25.136.

Other host names for instance backyardengineering.us, mail.backyardengineering.com, backyardengineering.com and xoanon.backyardengineering.us share IP numbers with mail.backyardengineering.us.

mail.backyardengineering.us - robtex.com