Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nettheory.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 14:20:09 UTC · ↺ Refresh
MX Hostnames
- aspmx5.googlemail.com
- mxb.mailgun.org
- aspmx.l.google.com
- aspmx3.googlemail.com
- mxa.mailgun.org
- alt2.aspmx.l.google.com
- aspmx2.googlemail.com
- aspmx4.googlemail.com
- alt1.aspmx.l.google.com
MX Priorities
- aspmx4.googlemail.com: 50
- mxa.mailgun.org: 70
- aspmx5.googlemail.com: 60
- alt1.aspmx.l.google.com: 10
- alt2.aspmx.l.google.com: 20
- aspmx.l.google.com: 5
- mxb.mailgun.org: 80
- aspmx3.googlemail.com: 40
- aspmx2.googlemail.com: 30
A / AAAA Records
- 54.209.136.110 ↩ ec2-54-209-136-110.compute-1.amazonaws.com
Mail Server IPs
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 34.149.236.64 ↩ 64.236.149.34.bc.googleusercontent.com
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1b ↩ ws-in-f27.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
SOA Record
Raw SOA
ns1.mydyndns.org zone-admin.dyndns.com 2007073280 10800 1800 604800 1800
Primary NS (mname)
ns1.mydyndns.org
Admin Email (rname)
zone-admin@dyndns.com
Serial
2007073280
Refresh
10800s
Retry
1800s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns4192.dns.dyn.com
ns2191.dns.dyn.com
ns1167.dns.dyn.com
ns3147.dns.dyn.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:mailgun.org ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- ovkou86tkfhber2756n7k663dc
- SPFv=spf1 include:_spf.google.com include:mailgun.org ~all
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