Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
patient21.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 10:18:51 UTC · ↺ Refresh
MX Hostnames
- alt3.aspmx.l.google.com
- alt4.aspmx.l.google.com
- aspmx.l.google.com
- alt2.aspmx.l.google.com
- alt1.aspmx.l.google.com
MX Priorities
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
A / AAAA Records
- 76.76.21.21
Mail Server IPs
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 142.251.111.27 ↩ bk-in-f27.1e100.net
- 2607:f8b0:4004:c19::1b ↩ bk-in-f27.1e100.net
SOA Record
Raw SOA
ns-754.awsdns-30.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-754.awsdns-30.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1617.awsdns-10.co.uk
ns-432.awsdns-54.com
ns-754.awsdns-30.net
ns-1494.awsdns-58.org
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.google.com include:sendgrid.net include:141334546.spf05.hubspotemail.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._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
7 records- SPFv=spf1 include:_spf.google.com include:sendgrid.net include:141334546.spf05.hubspotemail.net -all
- anthropic-domain-verification-eq2h98=l83giFxG68Lzv5oORrLlBzyVi
- atlassian-domain-verification=oQ9SrW5wdAfDRK7CitNDzBO+DTVqW5Rp/vLC3/UheNWcVzOCWMXC1UB1QRhiIpEr
- atlassian-sending-domain-verification=dc54111c-20f9-43ca-a53f-76f3733722c0
- google-site-verification=QaWocl7kgLJK9iu5zmhL2FCgrMdhngaoYD2W3yKIqP8
- google-site-verification=UIrr9kevlCN-QRAHA1z7FwQGVY94gsNWZRayKcwa_7w
- google-site-verification=boB5a9qvFhKfx1Suwjrg65TcFZgjTJ_Ym4GBRA6DgIU
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 patient21.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits