89juku.com - robtex.com
89juku.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 153.127.20.242🇯🇵 SAKURA-A153.127.0.0/17 (ISHIKARI) SAKURA Internet // HOKKAIDO JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan | ||||||
| PTR | s1.star-cloud.com | ||||||
| NS | ik1-408-36238.vs.sakura.ne.jp ⭐ ⚠️ Not in parent delegation | ||||||
| A | 153.127.20.242🇯🇵 SAKURA-A153.127.0.0/17 (ISHIKARI) SAKURA Internet // HOKKAIDO JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan | ||||||
| PTR | s1.star-cloud.com | ||||||
| NS | ns1.89juku.com ⚠️ Not in zone NS records | ||||||
| NS | ns2.89juku.com ⚠️ Not in zone NS records | ||||||
| MX | mail.89juku.com ⭐ | ||||||
| A | 153.127.20.242🇯🇵 SAKURA-A153.127.0.0/17 (ISHIKARI) SAKURA Internet // HOKKAIDO JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan | ||||||
| PTR | s1.star-cloud.com | ||||||
| TXT | v=spf1 a mx a:89juku.com ip4:153.127.20.242 ip4:153.127.20.242 ?all | ||||||
| SOA | ik1-408-36238.vs.sakura.ne.jproot@ik1-408-36238.vs.sakura.ne.jp 2025-11-26 #0 | ||||||
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=1776999896 | ||||||
Subdomains
mail.89juku.com |
Same first word
89juku.com |
DNS History
9 records (5 active, 4 former)
●NSik1-408-36238.vs.sakura.ne.jp2026-03-03 → 2026-04-24 · 3 obs
● 2026-03-03 04:45:44
● 2026-04-24 03:24:44
●NSns1.89juku.com2026-03-03 → 2026-04-24 · 3 obs
● 2026-03-03 04:45:44
● 2026-04-24 03:24:44
●NSns2.89juku.com2026-03-03 → 2026-04-24 · 3 obs
● 2026-03-03 04:45:44
● 2026-04-24 03:24:44
○NSpeople-server.net2015-07-18 → 2018-07-23 · 4 obs
● 2018-07-23 08:20:44
○ 2026-03-03 04:45:44
○ 2026-04-24 03:24:44
○NSs1.star-cloud.com2015-07-18 → 2018-07-23 · 4 obs
● 2018-07-23 08:20:44
○ 2026-03-03 04:45:44
○ 2026-04-24 03:24:44
○NSwww.star-cloud.com2015-07-18 → 2018-07-23 · 4 obs
● 2018-07-23 08:20:44
○ 2026-03-03 04:45:44
○ 2026-04-24 03:24:44
●MXmail.89juku.com2015-07-18 → 2026-04-24 · 2 obs
● 2026-04-24 03:24:44
○A133.242.14.1592015-07-18 → 2018-07-23 · 4 obs
● 2018-07-23 08:20:44
○ 2026-03-03 04:45:44
○ 2026-04-24 03:24:44
●A153.127.20.2422026-03-03 → 2026-04-24 · 3 obs
● 2026-03-03 04:45:44
● 2026-04-24 03:24:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 89juku.com | ns1.89juku.com, ns2.89juku.com | 2 records |
✅ Authoritative Response
Server:153.127.20.242
NS records: ns1.89juku.com, ns2.89juku.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 89juku.com (unsigned zone)
⏱️ Timing
Total: 632ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 153.127.20.242 |
| NS | 1 | ik1-408-36238.vs.sakura.ne.jp |
| MX | 1 | mail.89juku.com (pri: 5) |
| TXT | 1 | v=spf1 a mx a:89juku.com ip4:153.127.20. |
| SOA | 1 | ik1-408-36238.vs.sakura.ne.jp root.ik1-4 |
📌 Glue Records Collected
Total: 2
In-bailiwick: 2 (ns1.89juku.com, ns2.89juku.com)
Analysis
Hierarchy
mail.89juku.com is a child of 89juku.com.
IP Addresses
89juku.com resolves to one IP number: 153.127.20.242.
Other host names, for instance take-giken.com, mail.itsukikaikan.com, o-all.net, s3.star-cloud.com and mail.csscy.com share IP numbers with 89juku.com.
Name Servers
89juku.com is delegated to three name servers: ns1.89juku.com, ns2.89juku.com and ik1-408-36238.vs.sakura.ne.jp.
89juku.com at least partially shares name servers with other domains, including daikoutosou.net, star-cloud.info, face-lykaon.com, recolte.info and r-style291.com.
These name servers are commonly used with ns1.people-server.net, ns2.people-server.net, ns1.daikoutosou.net, ns2.daikoutosou.net, s1.star-cloud.com, ns1.face-lykaon.com, ns2.face-lykaon.com, ns1.r-style291.com, ns2.r-style291.com and ns1.grandsky-onmyoji.com.
Host names with a single IP number: The host name ik1-408-36238.vs.sakura.ne.jp points to 153.127.20.242.
Mail Servers
A single mail server handles 89juku.com, mail.89juku.com.
Host name mail.89juku.com resolves to a single IP: 153.127.20.242.