hikogaku.com - robtex.com
hikogaku.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 157.7.44.213🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| NS | dns01.muumuu-domain.com ⭐ | ||||||
| A | 202.239.23.39🇯🇵 IDC202.239.23.0/24 Frontier Inc. | ||||||
| NS | dns02.muumuu-domain.com | ||||||
| A | 160.251.249.62🇯🇵 GMOOSK-NET160.251.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| MX | mx.hetemail.jp ⭐ | ||||||
| A | 157.7.189.1🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | mx.heteml.jp | ||||||
| TXT | v=spf1 include:_spf.hetemail.jp ~all | ||||||
| TXT | google-site-verification=WQ309HMsj_iDsemct1RSysaxQnJFKinpLDNRj4TedzE | ||||||
| SOA | dns01.muumuu-domain.compostmaster@hikogaku.com serial=1785752880 | ||||||
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=1786360794 | ||||||
Subdomains
mail.hikogaku.com |
Same first word
hikogaku.com |
DNS History
11 records (4 active, 7 former)
○NSdns0.heteml.jp2026-06-30 → 2026-06-30 · 3 obs
● 2026-06-30 13:12:18
○ 2026-08-10 11:44:56
●NSdns01.muumuu-domain.com2026-08-10 → 2026-08-10 · 2 obs
● 2026-08-10 11:44:56
●NSdns02.muumuu-domain.com2026-08-10 → 2026-08-10 · 2 obs
● 2026-08-10 11:44:56
○NSdns1.heteml.jp2026-06-30 → 2026-06-30 · 3 obs
● 2026-06-30 13:12:18
○ 2026-08-10 11:44:56
○NSns.hikogaku.com2015-07-21 → 2017-03-14 · 4 obs
● 2017-03-14 20:07:36
○ 2026-06-30 13:12:18
○ 2026-08-10 11:44:56
○MXgolgo13.hyperdc.net2015-07-21 → 2017-03-14 · 4 obs
● 2017-03-14 20:07:36
○ 2026-06-30 13:12:18
○ 2026-08-10 11:44:56
○MXmail.hikogaku.com2015-07-21 → 2017-03-14 · 4 obs
● 2017-03-14 20:07:36
○ 2026-06-30 13:12:18
○ 2026-08-10 11:44:56
●MXmx.hetemail.jp2026-06-30 → 2026-08-10 · 3 obs
● 2026-06-30 13:12:18
● 2026-08-10 11:44:56
○A122.213.181.1362015-07-21 → 2017-03-14 · 4 obs
● 2017-03-14 20:07:36
○ 2026-06-30 13:12:18
○ 2026-08-10 11:44:56
○A157.7.189.672026-06-30 → 2026-06-30 · 3 obs
● 2026-06-30 13:12:18
○ 2026-08-10 11:44:56
●A157.7.44.2132026-08-10 → 2026-08-10 · 2 obs
● 2026-08-10 11:44:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| hikogaku.com | dns01.muumuu-domain.com, dns02.muumuu-domain.com | 2 records |
✅ Authoritative Response
Server:202.239.23.39
NS records: dns01.muumuu-domain.com, dns02.muumuu-domain.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for hikogaku.com (unsigned zone)
⏱️ Timing
Total: 486ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 157.7.44.213 |
| NS | 2 | dns02.muumuu-domain.com, dns01.muumuu-domain.com |
| MX | 1 | mx.hetemail.jp (pri: 10) |
| TXT | 2 | v=spf1 include:_spf.hetemail.jp ~all, google-site-verification=WQ309HMsj_iDsem |
| SOA | 1 | dns01.muumuu-domain.com postmaster.hikog |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (dns01.muumuu-domain.com, dns02.muumuu-domain.com)
Analysis
Hierarchy
mail.hikogaku.com is a subdomain of hikogaku.com.
IP Addresses
hikogaku.com resolves to just one IP address, 157.7.44.213.
Two other host names, along with bp-s.co.jp, junk-set.net and best-nw.com, also share IP numbers with hikogaku.com.
Name Servers
The NS records for hikogaku.com delegate to dns01.muumuu-domain.com and dns02.muumuu-domain.com.
hikogaku.com shares its NS records with other domains, for example shazarn.com, a-n.asia, 8904.jp and two others.
The name servers of hikogaku.com overlap at least partially with those of other domains — among them beesgroove.com, orikomi.biz, e-carrental.net and two more.
Both dns01.muumuu-domain.com and dns02.muumuu-domain.com have a single IP address each — dns01.muumuu-domain.com resolves to 202.239.23.39 while dns02.muumuu-domain.com resolves to 160.251.249.62.
Mail Servers
The sole mail server for hikogaku.com is mx.hetemail.jp.
Among the domains sharing a mail server setup with hikogaku.com are usudasetsubi.com, npo-mc.com, npo-dcma.or.jp and two others.
hikogaku.com partially shares its mail servers with other domains; known examples include soramame.com.au, g-quartet.jp and glare.co.jp.
alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com are mail servers that frequently appear together with these mail servers.
mx.hetemail.jp resolves to 157.7.189.1 and no other IP number.