Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
americanbuildings.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 14:10:14 UTC · ↺ Refresh
MX Hostnames
- americanbuildings-com.mail.protection.outlook.com
MX Priorities
- americanbuildings-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.10 (no PTR)
- 141.193.213.11 (no PTR)
Mail Server IPs
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
SOA Record
Raw SOA
ns11.constellix.com dns.constellix.com 2015010145 43200 3600 1209600 180
Primary NS (mname)
ns11.constellix.com
Admin Email (rname)
dns@constellix.com
Serial
2015010145
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns21.constellix.com
ns31.constellix.com
ns41.constellix.net
ns51.constellix.net
ns61.constellix.net
ns11.constellix.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ip4:128.136.42.208 ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
10 records- Foxit-domain-verification=1dd9a25769b7dea5cf34e6639708e4de
- openai-domain-verification=dv-yN8ae9F3TsM2l4OZ3HsEzGJF
- anthropic-domain-verification-fecb3d=Jcljrq7PaOV1TMdgJqROo0ddU
- MS=ms82953570
- OaZeI4EMpkqnGc/BsWS4zTWXPR1iMQNBrfKIIAiGzOIErF7RmPMCLSJcVWnz7WLTIh2vbaWlQtDHItCl3HT2mg==
- SPFv=spf1 include:spf.protection.outlook.com ip4:128.136.42.208 ~all
- n1zj0sr5jgpsjw6y80zwnbxxps9mktgk
- apple-domain-verification=Wy62SKqj7G9v0KEa
- dell-technologies-domain-verification=americanbuildings.com_a0d9d0cd-4ed4-4de2-9c37-6d386dc2846a_1720200423
- wrike-verification=NjM5OTMwMzo3ODIwYTU5M2QzNzhhZDIzZTgwNThiMGJlNDkzZjY4NDc2OTJlNjIzMzY0YjdkODcyYjZjMDQ1YjVkMTU0YzM3
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 americanbuildings.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits