chicagobooth.jp - robtex.com
chicagobooth.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 198.50.252.64🇨🇦 OVH198.50.128.0/17 Hosting route | ||||||
| PTR | ip64.ip-198-50-252.net | ||||||
| NS | ns1.instradns.com ⭐ | ||||||
| A | 75.2.6.34🇺🇸 Amazon75.2.0.0/20 | ||||||
| PTR | aef93cd39153ffbac.awsglobalaccelerator.com | ||||||
| NS | ns2.instradns.com | ||||||
| A | 75.2.85.37🇺🇸 Amazon75.2.80.0/20 | ||||||
| PTR | a9bf3e392db71e4d0.awsglobalaccelerator.com | ||||||
| NS | ns3.instradns.com ⚠️ Not in parent delegation | ||||||
| A | 99.83.188.20🇺🇸 Amazon99.83.176.0/20 | ||||||
| PTR | aef93cd39153ffbac.awsglobalaccelerator.com | ||||||
| MX | mail.chicagobooth.jp ⭐ | ||||||
| A | 66.70.178.74🇨🇦 OVH66.70.128.0/17 Hosting route | ||||||
| PTR | ns547779.ip-66-70-178.net | ||||||
| SOA | ns1.instradns.comroot@instra.com 2009-08-06 #1 | ||||||
jp
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | z.dns.jp ⭐ | ||||||
| NS | a.dns.jp | ||||||
| NS | b.dns.jp | ||||||
| NS | c.dns.jp | ||||||
| NS | d.dns.jp | ||||||
| NS | e.dns.jp | ||||||
| NS | f.dns.jp | ||||||
| NS | g.dns.jp | ||||||
| NS | h.dns.jp | ||||||
| SOA | z.dns.jproot@dns.jp serial=1786754702 | ||||||
Subdomains
mail.chicagobooth.jp |
Same first word
chicagobooth.asia |
chicagobooth.ru |
chicagobooth.cn |
chicagobooth.com |
chicagobooth.co.in |
chicagobooth.jp |
chicagobooth.edu |
chicagobooth.biz |
chicagobooth.info |
chicagobooth.it |
DNS History
6 records (5 active, 1 former)
●NSns1.instradns.com2015-06-16 → 2026-08-15 · 5 obs
● 2026-05-14 14:04:12
○ 2026-05-14 16:47:28
● 2026-05-15 02:47:00
● 2026-08-15 01:19:48
●NSns2.instradns.com2015-06-16 → 2026-08-15 · 5 obs
● 2026-05-14 14:04:12
○ 2026-05-14 16:47:28
● 2026-05-15 02:47:00
● 2026-08-15 01:19:48
●NSns3.instradns.com2015-06-16 → 2026-08-15 · 5 obs
● 2026-05-14 14:04:12
○ 2026-05-14 16:47:28
● 2026-05-15 02:47:00
● 2026-08-15 01:19:48
●MXmail.chicagobooth.jp2015-06-16 → 2026-08-15 · 5 obs
● 2026-05-14 14:04:12
○ 2026-05-14 16:47:28
● 2026-05-15 02:47:00
● 2026-08-15 01:19:48
○A184.95.38.1962015-06-16 → 2017-03-13 · 4 obs
● 2017-03-13 15:26:44
○ 2020-01-04 03:50:36
○ 2026-08-15 01:19:48
●A198.50.252.642020-01-04 → 2026-08-15 · 6 obs
● 2020-01-04 03:50:36
● 2026-05-14 14:04:12
○ 2026-05-14 16:47:28
● 2026-05-15 02:47:00
● 2026-08-15 01:19:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| chicagobooth.jp | ns1.instradns.com, ns2.instradns.com | - |
✅ Authoritative Response
Server:75.2.85.37
NS records: ns1.instradns.com, ns2.instradns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for chicagobooth.jp (unsigned zone)
⏱️ Timing
Total: 764ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 198.50.252.64 |
| NS | 3 | ns2.instradns.com, ns3.instradns.com... |
| MX | 1 | mail.chicagobooth.jp (pri: 10) |
| SOA | 1 | ns1.instradns.com root.instra.com |
Analysis
Hierarchy
chicagobooth.jp serves as the parent of mail.chicagobooth.jp.
IP Addresses
chicagobooth.jp resolves to just one IP address, 198.50.252.64.
Two other host names, along with gladius.co.nz, smileplay.se and chrysalisinvest.com, also share IP numbers with chicagobooth.jp.
Name Servers
chicagobooth.jp has three name servers — ns1.instradns.com, ns2.instradns.com and ns3.instradns.com.
chicagobooth.jp has at least partial name server overlap with other domains, such as ashtons.co, roomate.ca, batikair.co.id and two others.
The name servers ns1.hostingww.com, ns2.hostingww.com, ns3.hostingww.com and two others are commonly seen in use alongside these name servers.
Each of the three hostnames points to exactly one IP address: ns1.instradns.com points to 75.2.6.34, ns2.instradns.com points to 75.2.85.37 and ns3.instradns.com points to 99.83.188.20.
Mail Servers
The sole mail server for chicagobooth.jp is mail.chicagobooth.jp.
mail.chicagobooth.jp points to one IP number — 66.70.178.74.