Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
castertoncollege.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 05:04:04 UTC · ↺ Refresh
MX Hostnames
- castertoncollege-com.mail.protection.outlook.com
MX Priorities
- castertoncollege-com.mail.protection.outlook.com: 0
A / AAAA Records
- 54.194.24.28 ↩ ec2-54-194-24-28.eu-west-1.compute.amazonaws.com
Mail Server IPs
- 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.bdm.microsoftonline.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1.bdm.microsoftonline.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns1.bdm.microsoftonline.com
ns2.bdm.microsoftonline.com
ns3.bdm.microsoftonline.com
ns4.bdm.microsoftonline.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
11 records- apple-domain-verification=wAVDywmb1QukLbnf
- classroom-cloud-domain-verification=4c2d8a11-cc97-4355-b327-e01b434d4d76
- 75vjrf0sgpbdp68b1d5mp54ge
- 52m62e6l8mh5eqdbjkmbra1889
- v4htptuvorsjftno9er3unf60i
- jvcds1ifpoe5racepm3rtk3jfb
- SPFv=spf1 include:spf.protection.outlook.com -all
- mscid=f5DtM3Ktp/Mk0fjJRl/R5v9pKVWjvvw7bFwWMG6DByFIFMelHTEhjJLMefIECelxVv17pu5WiyTPVWLO1VT8OA==
- hf60433ufc0nnehjujjgkhe2h7
- a23o6d43t7ji2e4tbdsr0m2v8g
- 78k7rv85fdv8v1b21aglgmji87
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