Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
understood.org
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 15:14:50 UTC · ↺ Refresh
MX Hostnames
- smtp.google.com
MX Priorities
- smtp.google.com: 0
A / AAAA Records
- 104.18.14.133 (no PTR)
- 104.18.15.133
- 2606:4700::6812:f85
- 2606:4700::6812:e85
Mail Server IPs
- 172.253.122.27 ↩ bh-in-f27.1e100.net
- 172.253.62.27 ↩ bc-in-f27.1e100.net
- 172.253.62.26 ↩ bc-in-f26.1e100.net
- 172.253.115.26 ↩ bg-in-f26.1e100.net
- 172.253.115.27 ↩ bg-in-f27.1e100.net
- 2607:f8b0:4004:c06::1b ↩ bg-in-f27.1e100.net
- 2607:f8b0:4004:c06::1a ↩ bg-in-f26.1e100.net
- 2607:f8b0:4004:c07::1a ↩ bc-in-f26.1e100.net
- 2607:f8b0:4004:c07::1b ↩ bc-in-f27.1e100.net
SOA Record
Raw SOA
fred.ns.cloudflare.com dns.cloudflare.com 2398906125 10000 2400 604800 1800
Primary NS (mname)
fred.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398906125
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
jill.ns.cloudflare.com
fred.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:emsd1.com include:us._netblocks.mimecast.com include:mail.zendesk.com include:mg-spf.greenhouse.io include:spf.mandrillapp.com include:servers.mcsv.net include:_spf.google.com ~all
📊 DNS lookups: 7/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=5; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; adkim=r; aspf=r; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
⚠ Policy applies to 5% of failing messages only
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
20 records- mongodb-site-verification=xDxEGRjhRDlliS2UR2V3MwU9cq59bbAt
- facebook-domain-verification=gn0zf1wnv3tdo7ahfovpji41ho8v3p
- google-site-verification=stm0kS3xFBkm3P9Th1y31NB_DUixFETGK7L-0ObqOfU
- securitystudio-site-verification=G8gyGWRTEswJT49hGOwMvg==
- twilio-domain-verification=8260bdea6b9954209f72e17245c2f656
- qjr187zvqb5d3nh4jghw34ntlk9s0xng
- 0ed1fe018a142d1276c1ee49dfa5e1b1b939a9b8ea
- contractworksverify = 2XFwQ3o62jdjdyQyJFfzwt
- SPFv=spf1 include:emsd1.com include:us._netblocks.mimecast.com include:mail.zendesk.com include:mg-spf.greenhouse.io include:spf.mandrillapp.com include:servers.mcsv.net include:_spf.google.com ~all
- bs0tw4pbx73ck9b5hrw9w4cfvsy2fsl1
- atlassian-domain-verification=fx76FFIQkS9nthOLKFwI226APT1ig0M3WzX0cgr/8sdMeKOPwiFcIWkFRnoJJ1d7
- 84dw58n4ws11qbtlc6pwbkwvj0gs70m8
- apple-domain-verification=4EzXUQxFkglbg3hW
- fcp51l2t5mpdzf6d6x1ptmzlnnnn807f
- MS=ms36583737
- tmes=0bb5c6ba1c638cde600907776df1f1f9
- google-site-verification=TP0HWSLqOyry4MD8dqXenu2rtR1tcC64wGybEN-T9fc
- google-site-verification=7Tt3BipfbqkrdTX5GgQsY8CdZpkjFQOjIFs_Mo2Tcm0
- _jr2013rd8nglahx0ag3qlqt569265d4
- miro-verification=c7fe622056c95945a101c8f95e5956e8702b8301
Full email verification for understood.org
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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