Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
apartmentfinder.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 11:42:59 UTC · ↺ Refresh
MX Hostnames
- costar-com.mail.protection.outlook.com
MX Priorities
- costar-com.mail.protection.outlook.com: 10
A / AAAA Records
- 184.30.173.105 ↩ a184-30-173-105.deploy.static.akamaitechnologies.com
Mail Server IPs
- 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 52.101.10.8 ↩ mail-bn1pr04cu00100.inbound.protection.outlook.com
- 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f90c:: ↩ mail-sn1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.costar.com hostmaster.costar.com 2026030601 10800 3600 604800 60
Primary NS (mname)
ns1.costar.com
Admin Email (rname)
hostmaster@costar.com
Serial
2026030601
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
60s
Nameservers (NS)
ns1.costar.com
ns2.costar.com
SPF Record
✓ Strict (-all)
v=spf1 mx include:costar.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 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
14 records- _tolro8b4mw3ql89dkf0w8ows7ov5vgx
- google-site-verification=dAZu5uBCI4HRnQnteO2oanaHl5Yw8rb6CD9dDOHRVOw
- _yjpyp10f3n791wedo437g6r52pye25a
- notbgvhjvefnv0iijkkdi08dfu
- _2j4f57rzo6nut1kznqclkbmwmiyhqw2
- MS=ms95190426
- iooi16lm6799kr3mug1m11ufdo
- facebook-domain-verification=76ndwqa6nshj6nt7gpmk9wjr6ocga4
- a2vriilo6q811ooct3bcpad91n
- SPFv=spf1 mx include:costar.com -all
- logmein-verification-code=50e0c306-6c0e-4127-971a-1ba6c30c1a5e
- google-site-verification=R2elqbG9iXB_zWihfRk5HliXy914qJcfePmbjlyX44M
- atlassian-domain-verification=LAkz2FUxxMo9oBp9qlpKyMPkFQT3p7fXn2F/dz0S07Gt8LASUog19dNicOe7njFJ
- 2p94m8kp1j49pa85c7ujf8g89n
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