Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
masterbuilders.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 22:10:57 UTC · ↺ Refresh
MX Hostnames
- masterbuilders-com.mail.protection.outlook.com
MX Priorities
- masterbuilders-com.mail.protection.outlook.com: 0
A / AAAA Records
- 165.160.13.20 (no PTR)
- 165.160.15.20 (no PTR)
Mail Server IPs
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.cscdns.net hostmaster.cscdns.net 2021102052 28800 7200 604800 14400
Primary NS (mname)
dns1.cscdns.net
Admin Email (rname)
hostmaster@cscdns.net
Serial
2021102052
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
14400s
Nameservers (NS)
dns2.cscdns.net
dns1.cscdns.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:_spf.createsend.com ip4:18.153.184.0/27 ip4:18.157.252.162 ip4:63.176.198.88 ip4:63.177.152.86 ip4:18.185.12.122 ip4:18.198.255.64 ip4:18.199.27.111 ip6:2a05:d014:b6d:df06::1000/124 ip6:2a05:d014:b6d:df07::1000/124 ip6:2a05:d014:b6d:df08::1000/124 include:spf.sosafe.de include:_spf.salesforce.com a:c.spf.service-now.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
8 records- MS=ms48208284
- MS=ms66666542
- apple-domain-verification=prcxUGdIs0ZWjqIi
- ms-domain-verification=972ea976-88b0-4ab9-be2d-b0c47123a679
- ms-domain-verification=e0df519e-8582-49e3-b7b7-18752ce8d3a0
- google-site-verification=1Bog1ZJ0J5Px2Rawl_wVuKtMNuXxn77xqqitf6RwMDc
- adobe-idp-site-verification=d9b6d9f00e26e3adf15966f1b4c6011f7749c19258a9a8883b17e0611014b553
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.createsend.com ip4:18.153.184.0/27 ip4:18.157.252.162 ip4:63.176.198.88 ip4:63.177.152.86 ip4:18.185.12.122 ip4:18.198.255.64 ip4:18.199.27.111 ip6:2a05:d014:b6d:df06::1000/124 ip6:2a05:d014:b6d:df07::1000/124 ip6:2a05:d014:b6d:df08::1000/124 include:spf.sosafe.de include:_spf.salesforce.com a:c.spf.service-now.com ~all
Full email verification for masterbuilders.com
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