Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sw1.k12.wy.us
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-02 01:19:42 UTC · ↺ Refresh
MX Hostnames
- d124497b.ess.barracudanetworks.com
- d124497a.ess.barracudanetworks.com
MX Priorities
- d124497b.ess.barracudanetworks.com: 10
- d124497a.ess.barracudanetworks.com: 5
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 209.222.82.255 ↩ mail.ess.barracuda.com
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns10.dnsmadeeasy.com dns.dnsmadeeasy.com 2009010242 43200 3600 1209600 180
Primary NS (mname)
ns10.dnsmadeeasy.com
Admin Email (rname)
dns@dnsmadeeasy.com
Serial
2009010242
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns3.wyo.gov
ns7.wyo.gov
ns4.wyo.gov
ns6.wyo.gov
ns5.wyo.gov
ns8.wyo.gov
SPF Record
✓ Strict (-all)
v=spf1 ip4:146.166.33.44 include:spf.ess.barracudanetworks.com include:_spf.google.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 392 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
10 records- ec36f4464ca70215bb334b93117c17df
- cisco-ci-domain-verification=2a64a26fb4adc88eef05c4f884c64ad00f4825759b3bdd63107008735b9d5ff6
- apple-domain-verification=EOGThVHGwQoGzl8s
- rnx4s158ghhwczrbxcn1rmtcs6p4d374
- adobe-idp-site-verification=106fc28767c7b642b3e8d3081acf1d0352ed920cfbe2131f8a2d227c1f1f3cb6
- MS=B33774682CFBADB695082E51A4F007CDF02B189F
- cbnvfxb1fjbcx24l9qbbq53bpnhcsb49
- _gm2g9k55oj5vxmux35ut9igq25n8exl
- autodesk-domain-verification=_2H3geD9DOUg-as0FFVj
- SPFv=spf1 ip4:146.166.33.44 include:spf.ess.barracudanetworks.com include:_spf.google.com -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 sw1.k12.wy.us
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits