Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
ubras.com.cn
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-07-02 14:08:13 UTC · ↺ Refresh
MX Hostnames
- m1.feishu.cn
MX Priorities
- m1.feishu.cn: 20
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- mx.feishu.cn. (no PTR)
- 52.220.106.220 ↩ ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com
SOA Record
Raw SOA
vip3.alidns.com hostmaster.hichina.com 2026060216 3600 1200 86400 600
Primary NS (mname)
vip3.alidns.com
Admin Email (rname)
hostmaster@hichina.com
Serial
2026060216
Refresh
3600s
Retry
1200s
Expire
86400s
Minimum TTL
600s
Nameservers (NS)
vip4.alidns.com
vip3.alidns.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- SPFv=spf1 +include:_netblocks.m.feishu.cn ~all
- verification-code-site-App_feishu=WJCNayEcbyvDxkJNf7Qq
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