Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
howardcc.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 08:04:07 UTC · ↺ Refresh
MX Hostnames
- howardcc-edu.mail.protection.outlook.com
MX Priorities
- howardcc-edu.mail.protection.outlook.com: 10
A / AAAA Records
- 99.83.139.219 ↩ aa7a516db5fb6ff42.awsglobalaccelerator.com
- 75.2.36.179 ↩ aa7a516db5fb6ff42.awsglobalaccelerator.com
Mail Server IPs
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:f909:: ↩ mail-bn6pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
- 2a01:111:f403:f908::2 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f804::2 ↩ mail-co1pr05cu00402.inbound.protection.outlook.com
SOA Record
Raw SOA
mrbodnsmaster101.nss.crowncastle.com hostadmin.crowncastle.com 2020081466 10800 3600 2419200 300
Primary NS (mname)
mrbodnsmaster101.nss.crowncastle.com
Admin Email (rname)
hostadmin@crowncastle.com
Serial
2020081466
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns1.hvdata.net
ns2.hvdata.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:167.102.25.133 ip4:204.126.132.200/29 ip4:104.45.175.206 ip4:52.224.142.128 ip4:206.31.248.200/29 ip4:50.249.16.98 ip4:199.244.78.223 ip4:199.244.78.224 ip4:216.248.199.106 ip4:52.45.50.190 ip4:54.146.129.215 ip4:52.42.20.3 ip4:69.32.224.112/28 ip4:54.240.57.32/28 ip4:159.135.238.30 a:smtp.maintenanceconnection.com include:_spf.mediasite.com include:spf.protection.outlook.com include:_spf-eus.teamdynamix.com include:spf.elluciancloud.com include:verifymyfafsa.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
google._domainkey
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
12 records- atlassian-domain-verification=acTaIx7MgBN0XRNa5GbTmf5dxKXBJzy4hP/Kh/C/YPn/KVvLBLE9j85kFpR8nN2c
- miro-verification=2f2f1ade1bed0d870a404a90a62ebd30648aa5fd
- SPFv=spf1 ip4:167.102.25.133 ip4:204.126.132.200/29 ip4:104.45.175.206 ip4:52.224.142.128 ip4:206.31.248.200/29 ip4:50.249.16.98 ip4:199.244.78.223 ip4:199.244.78.224 ip4:216.248.199.106 ip4:52.45.50.190 ip4:54.146.129.215 ip4:52.42.20.3 ip4:69.32.224.112/28 ip4:54.240.57.32/28 ip4:159.135.238.30 a:smtp.maintenanceconnection.com include:_spf.mediasite.com include:spf.protection.outlook.com include:_spf-eus.teamdynamix.com include:spf.elluciancloud.com include:verifymyfafsa.com -all
- adobe-idp-site-verification=1727834c8fd248722b6aa61c900f3d02090825de0ac4eda07275b75a276ce325
- duo_sso_verification=CbNuQa6DmJq0E56OTYBtPLYQye8JCLVWzehQdfFS3BO2OVSERln4kiHcfuk5QIIw
- MS=ms27312411
- google-site-verification=q2dTb_mqkUH2gAYpjGMVMSB7vFEEwDoG4YnbYPqiTlQ
- duo_sso_verification=SyCFsdqNcKCra6Vqs9CoRrOIvBpNcapFz4AQAtpVaOCWn6OZiBCpZCpJwqSNoKto
- autodesk-domain-verification=KR8ND1XmBoZmEVzQATAJ
- dell-technologies-domain-verification=howardcc.edu_e7caf055-3b45-477a-b2c7-bcb6266b8bb8_1723730576
- atlassian-domain-verification=FaSwRF0v9fcqfJIGNdNsmIn8H3MkzfrXTj/vHVY7Fw7TXKd1GQyzJ30WyRlk9SYo
- jamf-site-verification=zvp6v8NyJQUj_AAPn7P-_w
Full email verification for howardcc.edu
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