Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
geoharbour.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 04:42:56 UTC · ↺ Refresh
MX Hostnames
- mx1.feishu.cn
- mx3.feishu.cn
- mx2.feishu.cn
MX Priorities
- mx1.feishu.cn: 1
- mx3.feishu.cn: 10
- mx2.feishu.cn: 5
A / AAAA Records
- 47.103.211.165 (no PTR)
Mail Server IPs
- 52.220.106.220 ↩ ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com
- 122.14.229.0 (no PTR)
- 101.126.58.225 (no PTR)
SOA Record
Raw SOA
dns23.hichina.com hostmaster.hichina.com 2026011209 3600 1200 86400 600
Primary NS (mname)
dns23.hichina.com
Admin Email (rname)
hostmaster@hichina.com
Serial
2026011209
Refresh
3600s
Retry
1200s
Expire
86400s
Minimum TTL
600s
Nameservers (NS)
dns24.hichina.com
dns23.hichina.com
SPF Record
✓ Strict (-all)
v=spf1 +include:_netblocks.m.feishu.cn -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine;rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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=ENvqxiIgoVubDUUZPhdC
- SPFv=spf1 +include:_netblocks.m.feishu.cn -all
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