Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
southwest.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 03:40:06 UTC · ↺ Refresh
MX Hostnames
- mail02.wnco.com
- outgoing.wnco.com
MX Priorities
- mail02.wnco.com: 10
- outgoing.wnco.com: 10
A / AAAA Records
- 66.150.1.229 (no PTR)
- 208.94.153.99 ↩ rdr-sdc.southwest.com
Mail Server IPs
- 65.170.41.242 ↩ mail02.wnco.com
- 65.170.41.241 ↩ outgoing.wnco.com
SOA Record
Raw SOA
ns-sdc.southwest.com domainrequest.wnco.com 1633 10800 3600 2419200 900
Primary NS (mname)
ns-sdc.southwest.com
Admin Email (rname)
domainrequest@wnco.com
Serial
1633
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
ns-w11.southwest.com
ns-sdc.southwest.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:luv.southwest.com include:spf.messagelabs.com include:cmail1.com include:amadeus.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected];fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
9 records- facebook-domain-verification=5tg9b0fpw4l87zy4ga4hqxzrgjnbu7
- tsktdktn7wq710fh3lqrrx391kfjwv0y
- apple-domain-verification=AVqb7df_lh4ZY0IFN-xHTHCQfzRorhFBV0YJIEi3dMk
- klaviyo-site-verification=TvuiSP
- identrust_validate=BvULH7j+tFTCcJxzas5YCHn9MFM82G99zGdJ3Nx7OIJy
- _4euyjhh2akthszptxyklufk2g4nm1jj
- identrust_validate=fXNA1Qb3CuyBMtCOpRZyaKbIaisaX1CBZMlJX+K8Q2KE
- SPFv=spf1 include:luv.southwest.com include:spf.messagelabs.com include:cmail1.com include:amadeus.com ~all
- pardot886213=5f9176871506272b28c41f1ddffd6a99f50aae6f7c1540d03a7e4474746e820f
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 southwest.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits