Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
coalmarch.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 02:17:48 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- alt2.aspmx.l.google.com
- aspmx.l.google.com
- aspmx2.googlemail.com
MX Priorities
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- aspmx2.googlemail.com: 10
- aspmx.l.google.com: 1
A / AAAA Records
- 35.202.252.85 ↩ sprowthq03.sprowt.us
Mail Server IPs
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 192.178.155.26 ↩ yuiadrs-in-f26.1e100.net
- 2607:f8b0:4004:c19::1a ↩ bk-in-f26.1e100.net
SOA Record
Raw SOA
ns-cloud1.googledomains.com dns-admin.google.com 2014090900 21600 3600 1209600 300
Primary NS (mname)
ns-cloud1.googledomains.com
Admin Email (rname)
dns-admin@google.com
Serial
2014090900
Refresh
21600s
Retry
3600s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns-cloud4.googledomains.com
ns-cloud2.googledomains.com
ns-cloud1.googledomains.com
ns-cloud3.googledomains.com
SPF Record
✓ Strict (-all)
v=spf1 include:_s00744188.autospf.email -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
google._domainkey
k1._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
6 records- knowbe4-site-verification=030c1fb4110e28c4ecff02ea0401c8de
- apple-domain-verification=Lv9gC8vgZ0B5kkLR
- sending_domain1042281=69f9da055c17e66d403db3e347d75d2221ff2863de230e3ce2a89731e5150a51
- pardot1042281=f9faa737081c1f4d14ce35ecbd0e41520cce484004b8e8888434be0e70ec8274
- SPFv=spf1 include:_s00744188.autospf.email -all
- anthropic-domain-verification-yecqc5=vZhq6sdgwZLwwrGiyjON69PaQ
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for coalmarch.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits