Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
builderswholesale.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 03:40:24 UTC · ↺ Refresh
MX Hostnames
- builderswholesale-com.mail.protection.outlook.com
MX Priorities
- builderswholesale-com.mail.protection.outlook.com: 10
A / AAAA Records
- 104.21.48.33 (no PTR)
- 172.67.176.110 (no PTR)
- 2606:4700:3035::6815:3021
- 2606:4700:3035::ac43:b06e
Mail Server IPs
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f802:: ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
cruz.ns.cloudflare.com dns.cloudflare.com 2399242021 10000 2400 604800 1800
Primary NS (mname)
cruz.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399242021
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
owen.ns.cloudflare.com
cruz.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=quarantine; fo=1; adkim=r; aspf=r
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
6 records- 9PaWafgfoa1svPGsSuHlvmbEPtg1ZnKRBGzMV/yIavFn/Qw4FapqqoR3Y4f1YFtzzmfJVTLLt3ElrQJ8dh0Ifw==
- MS=ms59228047
- apple-domain-verification=zDiSAHzxa6p9QCqE
- knowbe4-site-verification=391222572d5116590326177fa17212cb
- rRI30kBor0MUy7JwoFiGgbxl2kl6lv
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.salesforce.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 builderswholesale.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits