cotran.com - dns.ninja
cotran.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | dns19.hichina.com ⭐ | ||||||
| A | 2408:4009:501::27🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.40🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.60🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.200🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.220🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.40🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.60🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.100🇨🇳 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 | 139.224.142.110🇨🇳 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 | dns20.hichina.com | ||||||
| A | 2408:4009:501::28🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.38🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.61🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.198🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.222🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.38🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.61🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.98🇨🇳 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 | 139.224.142.108🇨🇳 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 | mx1.feishu.cn ⭐ | ||||||
| A | 52.220.106.220🇸🇬 Amazon52.220.0.0/15 SIN prefix | ||||||
| PTR | ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com | ||||||
| MX | mx2.feishu.cn(5) | ||||||
| A | 101.126.58.225🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 122.14.229.0🇨🇳 CHINAMOBILE-CN122.14.224.0/20 | ||||||
| MX | mx3.feishu.cn(10) | ||||||
| A | 52.220.106.220🇸🇬 Amazon52.220.0.0/15 SIN prefix | ||||||
| PTR | ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com | ||||||
| A | 101.126.58.225🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 122.14.229.0🇨🇳 CHINAMOBILE-CN122.14.224.0/20 | ||||||
| TXT | 202203211725510gjiz7xctap5id5cey991hpdiplgi6o0bl8e4kpjdl1s7a5398 | ||||||
| TXT | v=spf1 +include:_netblocks.m.feishu.cn -all | ||||||
| SOA | dns19.hichina.comhostmaster@hichina.com 2026-05-28 #9 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1783161536 | ||||||
Subdomains
www.cotran.com |
Same first word
Similar names
DNS History
11 records (5 active, 6 former)
●NSdns19.hichina.com2026-03-13 → 2026-07-04 · 3 obs
● 2026-03-13 07:27:18
● 2026-07-04 11:05:54
●NSdns20.hichina.com2026-03-13 → 2026-07-04 · 3 obs
● 2026-03-13 07:27:18
● 2026-07-04 11:05:54
○NSns73.worldnic.com2015-11-07 → 2018-01-02 · 4 obs
● 2018-01-02 20:51:32
○ 2026-03-13 07:27:18
○ 2026-07-04 11:05:54
○NSns74.worldnic.com2015-11-07 → 2018-01-02 · 4 obs
● 2018-01-02 20:51:32
○ 2026-03-13 07:27:18
○ 2026-07-04 11:05:54
○MXmail.b-io.co2015-06-24 → 2015-06-24 · 3 obs
○ 2015-11-07 10:31:54
○ 2026-07-04 11:05:54
●MXmx1.feishu.cn2026-03-13 → 2026-07-04 · 3 obs
● 2026-03-13 07:27:18
● 2026-07-04 11:05:54
●MXmx2.feishu.cn2026-03-13 → 2026-07-04 · 3 obs
● 2026-03-13 07:27:18
● 2026-07-04 11:05:54
●MXmx3.feishu.cn2026-03-13 → 2026-07-04 · 3 obs
● 2026-03-13 07:27:18
● 2026-07-04 11:05:54
○MXp.webcom.ctmail.com2016-02-04 → 2018-01-02 · 5 obs
● 2016-02-04 03:24:12
● 2018-01-02 20:51:32
○ 2026-03-13 07:27:18
○ 2026-07-04 11:05:54
○A205.178.189.1292015-11-07 → 2018-01-02 · 5 obs
● 2015-11-07 10:31:54
● 2018-01-02 20:51:32
○ 2026-03-13 07:27:18
○ 2026-07-04 11:05:54
○A208.91.197.1322015-06-24 → 2015-06-24 · 3 obs
○ 2015-11-07 10:31:54
○ 2026-07-04 11:05:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| cotran.com | dns19.hichina.com, dns20.hichina.com | 18 records |
✅ Authoritative Response
Server:120.76.107.40
NS records: dns19.hichina.com, dns20.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cotran.com (unsigned zone)
⏱️ Timing
Total: 887ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns20.hichina.com, dns19.hichina.com |
| MX | 3 | mx3.feishu.cn (pri: 10), mx1.feishu.cn (pri: 1)... |
| TXT | 2 | v=spf1 +include:_netblocks.m.feishu.cn -, 202203211725510gjiz7xctap5id5cey991hpdip |
| SOA | 1 | dns19.hichina.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 18
Out-of-bailiwick: 18 (dns19.hichina.com, dns19.hichina.com, dns19.hichina.com...)
Analysis
Hierarchy
cotran.com is a parent domain of www.cotran.com.
Name Servers
cotran.com has two authoritative name servers — dns19.hichina.com and dns20.hichina.com.
cotran.com shares its name server setup with other domains, including ft-work.cn, china-air-curtain.com, fairskygroup.com and two others.
cotran.com shares at least some of its name servers with other domains, including kyushu.cn, eaglexp.cn, cqutp.org and two others.
These name servers are frequently seen alongside the name servers ns1.alidns.com, ns2.alidns.com, ns7.alidns.com and ns8.alidns.com.
Host names with 9 IP numbers:
dns19.hichina.com points to 39.96.153.40, 39.96.153.60, 47.118.199.200 and 6 other IP addresses.
dns20.hichina.com points to 39.96.153.38, 39.96.153.61, 47.118.199.198 and 6 other IP addresses.
Mail Servers
cotran.com is handled by three mail servers: mx1.feishu.cn, mx2.feishu.cn and mx3.feishu.cn.
cotran.com shares mail servers — at least in part — with other domains, including allcomesfromnothing.com, fooodlab.com, abovegenius.com and two others.
Host names with three IP numbers:
mx3.feishu.cn resolves to 52.220.106.220, 101.126.58.225 and 122.14.229.0.
Host names with two IP numbers:
mx2.feishu.cn resolves to 101.126.58.225 and 122.14.229.0.
Host names pointing to a single IP address:
mx1.feishu.cn resolves to 52.220.106.220.
The host names mx3.feishu.cn and mx1.feishu.cn both resolve to 52.220.106.220 IP addresses.
The host names mx3.feishu.cn and mx2.feishu.cn both resolve to 101.126.58.225 IP addresses.
The host names mx3.feishu.cn and mx2.feishu.cn both resolve to 122.14.229.0 IP addresses.