cortp.com - robtex.com
cortp.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 121.43.164.164🇨🇳 Alibaba-Cloud121.42.0.0/15 | ||||||
| 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 | qiye163mx01.mxmail.netease.com ⭐ | ||||||
| A | 47.251.71.119🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object | ||||||
| A | 47.251.84.126🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object | ||||||
| MX | qiye163mx02.mxmail.netease.com(10) | ||||||
| A | 47.251.71.119🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object | ||||||
| A | 47.251.84.126🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object | ||||||
| TXT | v=DMARC1; p=none; fo=1; ruf=mailto:dmarc@qiye.163.com; rua=mailto:dmarc_repor... | ||||||
| TXT | v=spf1 include:spf.163.com -all | ||||||
| TXT | zoho-verification=zb20979555.zmverify.zoho.com | ||||||
| SOA | dns19.hichina.comhostmaster@hichina.com 2026-01-12 #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=1786106289 | ||||||
Same first word
cortp.com |
Similar names
DNS History
12 records (5 active, 7 former)
●NSdns19.hichina.com2026-06-04 → 2026-08-07 · 3 obs
● 2026-06-04 14:29:28
● 2026-08-07 12:52:12
●NSdns20.hichina.com2026-06-04 → 2026-08-07 · 3 obs
● 2026-06-04 14:29:28
● 2026-08-07 12:52:12
○NSns1.ezdnscenter.com2016-12-15 → 2018-01-16 · 4 obs
● 2018-01-16 11:25:24
○ 2026-06-04 14:29:28
○ 2026-08-07 12:52:12
○NSns2.ezdnscenter.com2016-12-15 → 2018-01-16 · 4 obs
● 2018-01-16 11:25:24
○ 2026-06-04 14:29:28
○ 2026-08-07 12:52:12
○NSns3.ezdnscenter.com2016-12-15 → 2018-01-16 · 4 obs
● 2018-01-16 11:25:24
○ 2026-06-04 14:29:28
○ 2026-08-07 12:52:12
○NSns4.ezdnscenter.com2016-12-15 → 2018-01-16 · 4 obs
● 2018-01-16 11:25:24
○ 2026-06-04 14:29:28
○ 2026-08-07 12:52:12
○NSns5.ezdnscenter.com2016-12-15 → 2018-01-16 · 4 obs
● 2018-01-16 11:25:24
○ 2026-06-04 14:29:28
○ 2026-08-07 12:52:12
○NSns6.ezdnscenter.com2016-12-15 → 2018-01-16 · 4 obs
● 2018-01-16 11:25:24
○ 2026-06-04 14:29:28
○ 2026-08-07 12:52:12
●MXqiye163mx01.mxmail.netease.com2026-06-04 → 2026-08-07 · 2 obs
● 2026-08-07 12:52:12
●MXqiye163mx02.mxmail.netease.com2026-06-04 → 2026-08-07 · 2 obs
● 2026-08-07 12:52:12
●A121.43.164.1642018-01-16 → 2026-08-07 · 3 obs
● 2018-01-16 11:25:24
● 2026-08-07 12:52:12
○A58.64.134.562016-12-15 → 2016-12-15 · 3 obs
○ 2018-01-16 11:25:24
○ 2026-08-07 12:52:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| cortp.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 cortp.com (unsigned zone)
⏱️ Timing
Total: 559ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 121.43.164.164 |
| NS | 2 | dns19.hichina.com, dns20.hichina.com |
| MX | 2 | qiye163mx02.mxmail.netease.com (pri: 10), qiye163mx01.mxmail.netease.com (pri: 5) |
| TXT | 3 | v=spf1 include:spf.163.com -all, v=DMARC1; p=none; fo=1; ruf=mailto:dmarc... |
| 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
IP Addresses
cortp.com resolves to just one IP address, 121.43.164.164.
Host names like xiangxiang.com are further examples that share IP numbers with cortp.com.
Name Servers
Two name servers handle the delegation for cortp.com: dns19.hichina.com and dns20.hichina.com.
cortp.com shares its NS records with other domains, for example boct-lcd.com, bavi.cn, dibangcn.com and two others.
The name servers of cortp.com overlap at least partially with those of other domains — among them jscqk.com, bgdeco.com, sychat.com and two more.
These name servers commonly appear alongside the name servers expirens3.hichina.com and expirens4.hichina.com.
DNS names with 9 IP addresses:
dns19.hichina.com resolves to 39.96.153.40, 39.96.153.60 and 47.118.199.200 among others, with 6 other IP addresses in total.
dns20.hichina.com resolves to 39.96.153.38, 39.96.153.61 and 47.118.199.198 among others, with 6 other IP addresses in total.
Mail Servers
cortp.com is served by two mail servers, qiye163mx01.mxmail.netease.com and qiye163mx02.mxmail.netease.com.
Among the domains sharing a mail server setup with cortp.com are guanligroup.com, xiandadiphyto.com, xn--4gvu6dyyf178b.com and two others.
cortp.com uses mail servers that are also used by other domains, including seya-cn.com, mon.flyertea.com and shpaerfeite.com.
qiye163mx01.mxmail.netease.com and qiye163mx02.mxmail.netease.com each point to two IP numbers — 47.251.71.119 and 47.251.84.126 — making both hosts identical in their DNS resolution.
qiye163mx01.mxmail.netease.com along with qiye163mx02.mxmail.netease.com each resolve to 47.251.71.119 IP addresses.
qiye163mx01.mxmail.netease.com along with qiye163mx02.mxmail.netease.com each resolve to 47.251.84.126 IP addresses.