Domain Overview
DNS: ✓ 7d ago
Checker: ✓ 7d ago
wudsec.com
Disposable
✓ Yes
Unknown
⚠ Yes
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-26 12:45:24 UTC · ↺ Refresh
MX Hostnames
- m1.feishu.cn
MX Priorities
- m1.feishu.cn: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 52.220.106.220 ↩ ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com
SOA Record
Raw SOA
dns11.hichina.com hostmaster.hichina.com 2026011209 3600 1200 86400 600
Primary NS (mname)
dns11.hichina.com
Admin Email (rname)
hostmaster@hichina.com
Serial
2026011209
Refresh
3600s
Retry
1200s
Expire
86400s
Minimum TTL
600s
Nameservers (NS)
dns12.hichina.com
dns11.hichina.com
SPF Record
✓ Soft Fail (~all)
v=spf1 +include:_netblocks.m.feishu.cn ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- verification-code-site-App_feishu=4R0Y8Y4S35tEYxB5IhjB
- SPFv=spf1 +include:_netblocks.m.feishu.cn ~all
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