geekyum.com
HTML metadata
Technology
- Server
- nginx
Third-party hosts loaded (1)
- at.alicdn.com×2
Registration
- Registrar
- Alibaba Cloud Computing (Beijing) Co., Ltd.
- Created
- 2021-06-19
- Expires
- 2027-06-19 393 days left
- Updated
- 2022-02-23
- Name servers
-
- dns29.hichina.com
- dns30.hichina.com
DNS records live
- NS
-
- dns29.hichina.com
- dns30.hichina.com
- MX
-
- 1 mx1.feishu.cn
- 10 mx3.feishu.cn
- 5 mx2.feishu.cn
Email authentication partial
- SPF
-
v=spf1 +include:_netblocks.m.feishu.cn -allstrict (-all) - DMARC
- not published
- DKIM
- no key found at common selectors
Certificate (current)
Sectigo RSA Domain Validation Secure Server CA
Expires in 73 days
HTTP security headers
- findings
-
- missing HSTS
- missing Content Security Policy
- missing frame protection
- missing content type protection
- missing Referrer Policy
- missing Permissions Policy