Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cn.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 02:14:54 UTC · ↺ Refresh
MX Hostnames
- cnccsh01.cn.edu
- cn-edu.mail.protection.outlook.com
- cngw.cn.edu
MX Priorities
- cn-edu.mail.protection.outlook.com: 0
- cngw.cn.edu: 10
- cnccsh01.cn.edu: 15
A / AAAA Records
- 141.193.213.21
- 141.193.213.20
Mail Server IPs
- 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 168.245.162.140 (no PTR)
- 168.245.162.143 (no PTR)
SOA Record
Raw SOA
ns11.zns-53.com itadmin.cn.edu 2025011861 43200 3600 1209600 180
Primary NS (mname)
ns11.zns-53.com
Admin Email (rname)
itadmin@cn.edu
Serial
2025011861
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns21.zns-53.net
ns31.zns-53.com
ns41.zns-53.net
ns11.zns-53.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:168.245.162.130 ip4:168.245.162.140 ip4:168.245.162.142 ip4:168.245.162.143 ip4:129.33.243.30 ip4:129.33.243.30 include:technolutions.net include:spf.protection.outlook.com include:spf.watermarkinsights.com include:emsd1.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
18 records- google-site-verification=-54Iq5-GLKI7jPo8nboUcj_fTe26fU1ixQ320Hi1C_M
- 4cvpqp9p09dbge42omngen5b8q
- MS=D934967887F8EAF32EC2A6812D4B2E746335F246
- efuu0f36vq2b4nbgqhaj2m5j8
- duo_sso_verification=PNwEoimorJBKll5zq6wqR03f1EO1qKEZPhOvKOOzswDvnHim5qpUzh7qGesrl6Lk
- google-site-verification=DQobmz2X5eDcx6IU7X1vifczv7Sdbvq4g8lu2-02efg
- facebook-domain-verification=mc6qphhqba7vcs58ckms9q31e51me8
- SPFv=spf1 ip4:168.245.162.130 ip4:168.245.162.140 ip4:168.245.162.142 ip4:168.245.162.143 ip4:129.33.243.30 ip4:129.33.243.30 include:technolutions.net include:spf.protection.outlook.com include:spf.watermarkinsights.com include:emsd1.com ~all
- 2vkGAhyWz0YsH/UpEPH8UcXCLwjc16hKmJTciCIfwoqDk2LRpVh+okhqcm2vJmoe+HuqXyJnCJqYGf+tST3f1A==
- google-site-verification=P-J3lP1GUr3o8qmP4VgSL6CZt6aYBsh8jKsPfkqspMY
- LNPBL4SP3HV4T6N0H418H5D0U8
- have-i-been-pwned-verification=c0b839bf6b6400e5d7606ca0916b77c5
- facebook-domain-verification=or0m252kwo645i1yaxb6tzgz459bu6
- 25pzyd96r7gc2m43k6ndf1syqm54gvgf
- zoho-verification=zb89338164.zmverify.zoho.com
- ZOOM_verify_-CuTAABCQui3IiqkVFuh8g
- c0eaol0m2ep8q61hsv141hrqoa
- escve8kiiimqqkk2kiabo5q26b
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for cn.edu
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits