Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
sterlingtradingtech.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 11:42:54 UTC · ↺ Refresh
MX Hostnames
- sterlingtradingtech-com.mail.protection.outlook.com
MX Priorities
No priority data.
A / AAAA Records
- 104.17.252.119
- 104.17.253.119
- 2606:4700::6811:fd77
- 2606:4700::6811:fc77
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
lara.ns.cloudflare.com
ed.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:4.28.184.221 include:spf.protection.outlook.com include:servers.mcsv.net include:mailgun.org include:49600665.spf07.hubspotemail.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- MS=ms56449268
- anthropic-domain-verification-2r6d6a=eRzqYIxusUzyI3HSVMuREZDxC
- google-site-verification=xqLt78oF2bnH61rILJ_l-VOY0mJIIRgdzvEJW2gkF-U
- SPFv=spf1 ip4:4.28.184.221 include:spf.protection.outlook.com include:servers.mcsv.net include:mailgun.org include:49600665.spf07.hubspotemail.net -all
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 sterlingtradingtech.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits