zhihu.com
知乎 - 有问题，就会有答案
zhihu.com is registered with DNSPod, Inc. since June 15, 2007 (19.4 years). The registration expires on September 29, 2029. The site runs on React, Baidu Analytics, Content Security Policy and 1 other technologies. Its email security grade is C. Its SSL certificate is issued by DigiCert, Inc. and is valid for 31 more days.
- Domain age
- 19.4 yrs
- Technologies
- 4
- Email security
- C
- SSL days left
- 31
Registration
| Registrar | DNSPod, Inc. |
|---|---|
| IANA ID | 1697 |
| Registered | June 15, 2007 |
| Expires | September 29, 2029 |
| Updated | April 18, 2022 |
| Status | client transfer prohibited, client update prohibited |
| Name servers | ns3.dnsv5.com, ns4.dnsv5.com |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 43.135.83.2 | 600 |
| MX | mxbiz2.qq.com 10 | 243 |
| MX | mxbiz1.qq.com 5 | 243 |
| NS | ns3.dnsv5.com | 85895 |
| NS | ns4.dnsv5.com | 85895 |
| TXT | v=spf1 include:spf.mail.qq.com -all | 600 |
| TXT | apple-domain-verification=0ABf57rqECBcCKb6 | 600 |
| TXT | google-site-verification=WreyhhjBpv_EcWw27fGRsO7yz4sy_6oiT1HeoJfv1JQ | 600 |
| TXT | 3nsr8c3w7yg4bngn0z53wr22hm54s5q2 | 600 |
| TXT | m5g7qjk31l5d1hkq6m3zvcf6lg2f0h16 | 600 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1, DigiCert, Inc. |
| Expires | December 11, 2026 |
| Days remaining | 31 |
| Protocol | TLSv1.2 |
| Names | *.zhihu.com, zhihu.com |
Email security
- warnSPF uses 8 of the 10 allowed DNS lookups. Adding another service may break it.
- warnDKIM key found (selector: google, mail) but it is only 1024 bits; 2048 is recommended.
- warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
- warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
- warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
- goodSPF record found.
- goodSPF ends with -all: servers you have not listed are rejected (hard fail).
- goodDMARC policy is quarantine: failing mail goes to spam. Move to p=reject for full protection.
- goodDMARC aggregate reports are sent to mailto:[email protected].
- good2 MX record(s) found. Mail is handled by Tencent Exmail.
Homepage metadata
| Title | 知乎 - 有问题，就会有答案 |
|---|---|
| Description | 知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。知乎凭借认真、专业、友善的社区氛围、独特的产品机制以及结构化和易获得的优质内容，聚集了中文互联网科技、商业、影视、时尚、文化等领域最具创造力的人群，已成为综合性、全品类、在诸多领域具有关键影响力的知识分享社区和创作者聚集的原创内容平台，建立起了以社区驱动的内容变现商业模式。 |
| Language | zh |
| Indexable | Yes |
| Word count | 69 |
About zhihu.com
Who is the registrar of zhihu.com?
zhihu.com is registered with DNSPod, Inc. (IANA ID 1697).
When does zhihu.com expire?
The current registration of zhihu.com expires on September 29, 2029. It was first registered on June 15, 2007.
What technology does zhihu.com use?
We detected 4 technologies on zhihu.com, including Baidu Analytics, React, Content Security Policy, HSTS.
Does zhihu.com protect its email with SPF and DMARC?
zhihu.com scores 76/100 (grade C) for email security. SPF uses 8 of the 10 allowed DNS lookups. Adding another service may break it. DKIM key found (selector: google, mail) but it is only 1024 bits; 2048 is recommended.
What are the name servers of zhihu.com?
zhihu.com uses ns3.dnsv5.com, ns4.dnsv5.com.