Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
isbirconstruction.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 12:49:46 UTC · ↺ Refresh
MX Hostnames
- isbirconstruction-com.mail.protection.outlook.com
MX Priorities
- isbirconstruction-com.mail.protection.outlook.com: 0
A / AAAA Records
- 74.208.236.180 ↩ 74-208-236-180.elastic-ssl.ui-r.com
- 2607:f1c0:100f:f000::283 ↩ 2607-f1c0-100f-f000-0000-0000-0000-0283.elastic-ssl.ui-r.com
Mail Server IPs
- 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
- 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.40.6 ↩ mail-cy1pr03cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
- 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1045.ui-dns.com hostmaster.1und1.com 2017060128 28800 7200 604800 600
Primary NS (mname)
ns1045.ui-dns.com
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060128
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1045.ui-dns.de
ns1045.ui-dns.biz
ns1045.ui-dns.org
ns1045.ui-dns.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:162.214.96.218 ip4:50.243.162.89 +a +mx include:spf.constantcontact.com include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; aspf=r; adkim=r; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
8 records- 2020201111._domainkey
- d55ls7gi0t4j1fk8alcmdoeulk
- MS=ms42163737
- D1D4C76NLKCPHUU6NJVO8N4WBAA8J29PDE7WE5KB
- q69ncafh6j6fmi2aituto19a0u
- 9i5ifvsj5j154tsqa33hotavpt
- SPFv=spf1 ip4:162.214.96.218 ip4:50.243.162.89 +a +mx include:spf.constantcontact.com include:spf.protection.outlook.com -all
- WW15WNMXY2J4SPS38PRZG0LD4ICEQ37V7IS0O1OT
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