Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
niu.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 02:51:21 UTC · ↺ Refresh
MX Hostnames
- niu-edu.mail.protection.outlook.com
MX Priorities
- niu-edu.mail.protection.outlook.com: 0
A / AAAA Records
- 131.156.223.14 ↩ webmain-onprem.niu.edu
Mail Server IPs
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.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:f90f::1 ↩ mail-sa9pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
dns-ext1.niu.edu empty.empty 2024049740 3600 600 1209600 3600
Primary NS (mname)
dns-ext1.niu.edu
Admin Email (rname)
empty@empty
Serial
2024049740
Refresh
3600s
Retry
600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
dns-ext1.niu.edu
dns-ext2.niu.edu
SPF Record
✓ Strict (-all)
v=spf1 ip4:131.156.0.0/16 include:spf-a.niu.edu include:spf-b.niu.edu -all
📊 DNS lookups: 3/10
✓ 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
✓ 5 found
selector1._domainkey
selector2._domainkey
k1._domainkey
s1._domainkey
s2._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
13 records- rua=mailto:[email protected]
- yahoo-verification-key=d+mIoTFMPS/Pt6HVp/QfdwRulbR/Kme78Efv+qGPBUE=google-site-verification=CC8fw8IUuQ-ytqvJShC6Q0hekjiiPXT_qRSVRRLpWXE
- docusign=6a35ba1d-7ae3-4079-ac7a-9bd45439deb7
- SPFv=spf1 ip4:131.156.0.0/16 include:spf-a.niu.edu include:spf-b.niu.edu -all
- hibp-verify=dweb_r99aza50a2xwm44an13qtj2a
- google-site-verification=5cjSTz8DvO0x04PMYTFJcIbn-Rev9BFg8iNnE-HFPIU
- autodesk-domain-verification=hw6d-miT9ba8-WuZ8Kq9
- docusign=59eb093d-df34-43bc-83fb-3d7424734047
- docusign=92e291cf-fcfa-436a-a9d9-09700cf0ce3e
- google-gws-recovery-domain-verification=62020772
- hkq6bl0v0cy3pb4g8z7f0vtvyc873vxr
- docusign=f58976bc-f626-4232-8836-844e17ff7832
- MS=ms75199486
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