csdn.net
csdn.net is registered with Alibaba Cloud Computing (Beijing) Co., Ltd. since March 11, 1999 (27.7 years). The registration expires on March 11, 2027. Its email security grade is D. Its SSL certificate is issued by Beijing Xinchacha Credit Management Co., Ltd. and is valid for 14 more days.
- Domain age
- 27.7 yrs
- Technologies
- —
- Email security
- D
- SSL days left
- 14
Registration
| Registrar | Alibaba Cloud Computing (Beijing) Co., Ltd. |
|---|---|
| IANA ID | 420 |
| Registered | March 11, 1999 |
| Expires | March 11, 2027 |
| Updated | October 15, 2025 |
| Status | client transfer prohibited, client update prohibited |
| Name servers | vip3.alidns.com, vip4.alidns.com |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 124.70.25.132 | 586 |
| MX | mxbiz1.qq.com 5 | 600 |
| MX | mxbiz2.qq.com 10 | 600 |
| NS | vip3.alidns.com | 86400 |
| NS | vip4.alidns.com | 86400 |
| TXT | v=spf1 include:spf.mail.qq.com -all | 60 |
| TXT | openai-domain-verification=dv-jmgMCggpzFjVtj8DKaWKt4Xy | 60 |
| TXT | MS=31CFB7A983BC11C83514100AA1729972691EDAAF | 60 |
| TXT | aliyun-site-verification=019d4b53-d811-47df-8312-695fcef366f4 | 60 |
| TXT | google-site-verification=nn4nvxbYITKfb8-tv-QWw4H7PsjTM6LGvHDeUvrw0hA | 60 |
| TXT | google-site-verification=z3-mDSu38Y05ctn4_y3tS7j62uO9F3clDutTjL-DPOY | 60 |
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | CN, Xcc Trust OV SSL CA, Beijing Xinchacha Credit Management Co., Ltd. |
| Expires | November 24, 2026 |
| Days remaining | 14 |
| Protocol | TLSv1.3 |
| Names | *.csdn.net, csdn.net |
Email security
- warnSPF uses 8 of the 10 allowed DNS lookups. Adding another service may break it.
- warnNo DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
- 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.
About csdn.net
Who is the registrar of csdn.net?
csdn.net is registered with Alibaba Cloud Computing (Beijing) Co., Ltd. (IANA ID 420).
When does csdn.net expire?
The current registration of csdn.net expires on March 11, 2027. It was first registered on March 11, 1999.
Does csdn.net protect its email with SPF and DMARC?
csdn.net scores 64/100 (grade D) for email security. SPF uses 8 of the 10 allowed DNS lookups. Adding another service may break it. No DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
What are the name servers of csdn.net?
csdn.net uses vip3.alidns.com, vip4.alidns.com.