Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
thoughtbot.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 23:01:59 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- aspmx.l.google.com
- aspmx2.googlemail.com
- aspmx5.googlemail.com
- alt2.aspmx.l.google.com
- aspmx3.googlemail.com
- aspmx4.googlemail.com
MX Priorities
- aspmx5.googlemail.com: 30
- aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 20
- alt2.aspmx.l.google.com: 20
- aspmx2.googlemail.com: 30
- aspmx3.googlemail.com: 30
- aspmx4.googlemail.com: 30
A / AAAA Records
- 146.75.33.171 (no PTR)
- 2a04:4e42:79::427
Mail Server IPs
- 142.250.102.27 ↩ rb-in-f27.1e100.net
- 2a00:1450:4025:402::1b ↩ rb-in-f27.1e100.net
- 172.253.63.27 ↩ bi-in-f27.1e100.net
- 2607:f8b0:4004:c1f::1b ↩ pd-in-f27.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
SOA Record
Raw SOA
ns1.dnsimple.com admin.dnsimple.com 1436193050 86400 7200 604800 300
Primary NS (mname)
ns1.dnsimple.com
Admin Email (rname)
admin@dnsimple.com
Serial
1436193050
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns3.dnsimple.com
ns4.dnsimple-edge.org
ns1.dnsimple.com
ns2.dnsimple-edge.net
SPF Record
✓ Soft Fail (~all)
v=spf1 a ip4:100.12.1.66 ip4:74.92.13.241 include:_spf.google.com include:helpscoutemail.com include:spf.mail.intercom.io ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 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
22 records- google-site-verification=aM0E9LohKr2O6GxWB9ze3lXzAd_wlKoJ2tQk6MzhBUo
- ALIAS for dualstack.f.shared.global.fastly.net
- canva-site-verification=Xkkoh5UR4b2aLZtmTnP5LQ
- apple-domain-verification=YPehXw4qttTuySbJ
- MS=ms27051252
- google-site-verification=0X8X47wdrsz7uvMtclxPltaedC8XwMb1kW31cFH_jeA
- google-site-verification=pFoYtgbd6tc74KGxv5yWxu2QTH0oKllYLrYbTt35iNM
- google-site-verification=7I882IwQI8YLryUiY5GfJoR_7Le0ZJn9fIP7_yqXkRM
- google-site-verification=FjositL1KvtIzAiotvRhyIHGclEwY2xTrS6pUD3PkN4
- atlassian-domain-verification=j1ZS0MZZ8KVbaDGYUfD6sIyLHqmoLeSi1ALWBfQwqK0eOP5upy34ntV0XspIO3Md
- google-site-verification=Ktz4zd9R0b7WmlcH2FxntriJXkUZw0hHIIA5sL1JMZE
- rippling-domain-verification=a18ecf707237e4b8
- google-site-verification=mup1e9msIsBA7R82RCq8DWHpCqxUsvLS10PQ2SQhnps
- remote-domain-verification=5c880e7b-36bc-4067-ae23-fb724e26996a
- google-site-verification=5Mj6-wfZrXGQ-NW0P7eb5XhZqD7T9BfRRkptV7FebCc
- proxy-ssl.webflow.com
- google-site-verification=RFIJjVWqkl5mmMfa5UARKLtros6GJPA2sl6g9snSXH8
- SPFv=spf1 a ip4:100.12.1.66 ip4:74.92.13.241 include:_spf.google.com include:helpscoutemail.com include:spf.mail.intercom.io ~all
- anthropic-domain-verification-82z286=wA5EhPRWvo1sRDxY0s69WjNhM
- _globalsign-domain-verification=_XCFILJ7eSiRq9rSWcB9wqJjbgKsGbvW2wQ9FztWPW
- google-site-verification=Cfifgvm1ECfvBIJRb4MiIqZ7L4acz3YAbzs388SW70k
- google-site-verification=wTFwBl7bRFpfSDIhbAQa8bGqJLzIyKkrC5fauGa3UHw
Full email verification for thoughtbot.com
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