bestpdf.co - robtex.com
bestpdf.co
| DNSSEC | ⚠️ Not signed | ||||||
| NS | dns31.hichina.com ⭐ | ||||||
| A | 2408:4009:501::39🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.39🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.59🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.199🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.219🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.39🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.59🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.99🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 139.224.142.109🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| NS | dns32.hichina.com | ||||||
| A | 2408:4009:501::40🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.37🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.62🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.197🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.221🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.37🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.62🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.102🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 139.224.142.107🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| MX | mx2.zoho.com.cn ⭐ | ||||||
| A | 163.53.93.28🇨🇳 BIH-CN163.53.92.0/22 Chinanet Shanghai | ||||||
| PTR | mx1.zoho.com.cn | ||||||
| PTR | mx2.zoho.com.cn | ||||||
| PTR | mx.zoho.com.cn | ||||||
| MX | mx.zoho.com.cn(20) | ||||||
| A | 124.251.121.155🇨🇳 VNET-BACKBONE-HB124.251.120.0/23 | ||||||
| PTR | mx1.zoho.com.cn | ||||||
| PTR | mx2.zoho.com.cn | ||||||
| PTR | mx.zoho.com.cn | ||||||
| A | 163.53.93.28🇨🇳 BIH-CN163.53.92.0/22 Chinanet Shanghai | ||||||
| PTR | mx1.zoho.com.cn | ||||||
| PTR | mx2.zoho.com.cn | ||||||
| PTR | mx.zoho.com.cn | ||||||
| TXT | v=spf1 include:spf.mailjet.com include:zohomail.com.cn ~all | ||||||
| TXT | zoho-verification=zb74956490.zmverify.zoho.com.cn | ||||||
| SOA | dns31.hichina.comhostmaster@hichina.com 2026-01-12 #9 | ||||||
co
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns0.centralnic.net ⭐ | ||||||
| NS | a.registrydns.co | ||||||
| NS | b.registrydns.co | ||||||
| NS | c.registrydns.co | ||||||
| NS | d.registrydns.co | ||||||
| SOA | ns0.centralnic.nethostmaster@centralnic.net serial=1759655111 | ||||||
Subdomains
www.bestpdf.co |
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSdns31.hichina.com2026-03-20 → 2026-05-11 · 2 obs
● 2026-05-11 03:23:18
●NSdns32.hichina.com2026-03-20 → 2026-05-11 · 2 obs
● 2026-05-11 03:23:18
●MXmx.zoho.com.cn2026-03-20 → 2026-05-11 · 2 obs
● 2026-05-11 03:23:18
●MXmx2.zoho.com.cn2026-03-20 → 2026-05-11 · 2 obs
● 2026-05-11 03:23:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| co | c.registrydns.co, b.registrydns.co, d.registrydns.co, a.registrydns.co | - |
| bestpdf.co | dns32.hichina.com, dns31.hichina.com | - |
✅ Authoritative Response
Server:39.96.153.39
NS records: dns32.hichina.com, dns31.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for bestpdf.co (unsigned zone)
⏱️ Timing
Total: 1723ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns31.hichina.com, dns32.hichina.com |
| MX | 2 | mx2.zoho.com.cn (pri: 20), mx.zoho.com.cn (pri: 10) |
| TXT | 2 | v=spf1 include:spf.mailjet.com include:z, zoho-verification=zb74956490.zmverify.zo |
| SOA | 1 | dns31.hichina.com hostmaster.hichina.com |
Analysis
Hierarchy
bestpdf.co is the parent of www.bestpdf.co.
Name Servers
bestpdf.co's delegation uses two name servers, dns31.hichina.com and dns32.hichina.com.
bestpdf.co shares the same name server setup as other domains, for example sayotech.com, chachala.com, dachunet.com, ciss.org.cn and hcwise.com.
bestpdf.co at least partially shares name servers with other domains, including accoliance.xyz, fregame.com, megapower.cn, fnlq.com and afmw.cn.
these name servers are commonly used together with expirens3.hichina.com, expirens4.hichina.com and ns1.alidns.com.
dns31.hichina.com points to: 2408:4009:501::39, 39.96.153.39, 39.96.153.59, 47.118.199.199, 47.118.199.219, 120.76.107.39, 120.76.107.59, 139.224.142.99 and 139.224.142.109.
dns32.hichina.com points to: 2408:4009:501::40, 39.96.153.37, 39.96.153.62, 47.118.199.197, 47.118.199.221, 120.76.107.37, 120.76.107.62, 139.224.142.102 and 139.224.142.107.
Mail Servers
bestpdf.co is handled by two mail servers: mx2.zoho.com.cn and mx.zoho.com.cn.
bestpdf.co shares its mail server setup with other domains, including imagecolorizer.com, 355.es, eahoraebike.com, bisazza.com.cn and stranger-online.com.
The mail servers for bestpdf.co are shared with other domains, for instance cardmaster.com.tw, malandajewelry.com, meikeda.com.cn, gps26.com and newchi.cn.
These mail servers are commonly used alongside mx3.zoho.com.cn and alt2.aspmx.l.google.com.
Host names with two IPs:
mx.zoho.com.cn points to 124.251.121.155 and 163.53.93.28.
Host names with one IP:
mx2.zoho.com.cn points to 163.53.93.28.
Names pointing to 163.53.93.28: