Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
goldcast.io
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-06-13 04:56:11 UTC · ↺ Refresh
MX Hostnames
- mxa-0011dd01.gslb.pphosted.com
- mxb-0011dd01.gslb.pphosted.com
MX Priorities
- mxb-0011dd01.gslb.pphosted.com: 10
- mxa-0011dd01.gslb.pphosted.com: 10
A / AAAA Records
- 76.76.21.21 (no PTR)
Mail Server IPs
- 148.163.143.98 ↩ mx0b-0011dd01.pphosted.com
- 148.163.147.149 ↩ mx0a-0011dd01.pphosted.com
SOA Record
Raw SOA
ns-1180.awsdns-19.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1180.awsdns-19.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-477.awsdns-59.com
ns-926.awsdns-51.net
ns-1180.awsdns-19.org
ns-2030.awsdns-61.co.uk
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.google.com include:7904004.spf10.hubspotemail.net include:mail.zendesk.com include:_spf.sendergen.com include:sendgrid.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; pct=100; ri=86400; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 5 found
google._domainkey
selector1._domainkey
selector2._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
7 records- SPFv=spf1 include:_spf.google.com include:7904004.spf10.hubspotemail.net include:mail.zendesk.com include:_spf.sendergen.com include:sendgrid.net -all
- wiz-domain-verification=4f7273922fbc31b2ab7a32f5beec620d1016b83d0e4e9c05c65f8c38d1acf3a1
- MS=ms48458357
- ZOOM_verify_xM8XS7vX6mP6ib5GFlmsxc
- goldcast-domain-verification-8kmrdk=UU6oeWqflxI1UYi4Nxa9eiRqT
- google-site-verification=x6myt_DCr7A-tq75g2V-n-q7Sss6maW9n8-Woc4EbuA
- hubspot-developer-verification=NjU1MzMxYjYtNDVhNi00ZmY2LWE1MTctOTE1YjVhYjNkY2Y2
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 · Customize →
See demo & docs
Deep verification
Full email verification for goldcast.io
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits