Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
siouxfalls.org
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-06-03 08:24:51 UTC · ↺ Refresh
MX Hostnames
- mxa-0018d901.gslb.pphosted.com
- mxb-0018d901.gslb.pphosted.com
MX Priorities
- mxa-0018d901.gslb.pphosted.com: 10
- mxb-0018d901.gslb.pphosted.com: 10
A / AAAA Records
- 52.247.170.120 (no PTR)
Mail Server IPs
- 66.159.239.137 ↩ mx0b-0018d901.pphosted.com
- 66.159.241.165 ↩ mx0a-0018d901.pphosted.com
SOA Record
Raw SOA
ns10.digicertdns.com dns.digicertdns.com 2009010198 43200 3600 1209600 180
Primary NS (mname)
ns10.digicertdns.com
Admin Email (rname)
dns@digicertdns.com
Serial
2009010198
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns2.dnsmadeeasy.com
ns1.dnsmadeeasy.com
ns0.dnsmadeeasy.com
ns4.dnsmadeeasy.com
ns3.dnsmadeeasy.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:smtp.iii.com ip4:206.176.35.1 ip4:54.240.62.215 ip4:54.240.62.216 ip4:168.245.5.8 mx -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=0;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- MS=ms64114961
- SPFv=spf1 include:spf.protection.outlook.com include:smtp.iii.com ip4:206.176.35.1 ip4:54.240.62.215 ip4:54.240.62.216 ip4:168.245.5.8 mx -all
- MS=ms53009253
- MS=ms35486618
- apple-domain-verification=GE6rNSLyyLaMddAP
- duo_sso_verification=Dj1QYAcd6GPEmGI66wEuKtg0sPahuzdBIAvrZmWRblflyhbXkjh3NfRCCuRBH6rf
- MS=ms45256818
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 siouxfalls.org
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits