devwork.jp - dns.ninja
devwork.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 157.7.189.64🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | users252.vip.heteml.jp | ||||||
| NS | devwork.jp ⭐ | ||||||
| A | 157.7.189.64🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | users252.vip.heteml.jp | ||||||
| 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.heteml.jp ~all | ||||||
| SOA | devwork.jppostmaster@devwork.jp serial=1755660178 | ||||||
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=1789182002 | ||||||
NS for
devwork.jp |
Same first word
Similar names
Previous names
Next names
DNS History
5 records (5 active, 0 former)
●NSdevwork.jp2026-09-04 → 2026-09-12 · 2 obs
● 2026-09-12 03:07:26
●NSdns01.muumuu-domain.com2026-09-04 → 2026-09-12 · 2 obs
● 2026-09-12 03:07:26
●NSdns02.muumuu-domain.com2026-09-04 → 2026-09-12 · 2 obs
● 2026-09-12 03:07:26
●MXmx.hetemail.jp2026-09-04 → 2026-09-12 · 2 obs
● 2026-09-12 03:07:26
●A157.7.189.642026-09-04 → 2026-09-12 · 2 obs
● 2026-09-12 03:07:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, e.dns.jp, c.dns.jp... | - |
| devwork.jp | dns01.muumuu-domain.com, dns02.muumuu-domain.com | - |
✅ Authoritative Response
Server:160.251.249.62
NS records: dns01.muumuu-domain.com, dns02.muumuu-domain.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for devwork.jp (unsigned zone)
⏱️ Timing
Total: 1618ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 157.7.189.64 |
| NS | 2 | dns02.muumuu-domain.com, dns01.muumuu-domain.com |
| MX | 1 | mx.hetemail.jp (pri: 50) |
| TXT | 1 | v=spf1 include:_spf.heteml.jp ~all |
| SOA | 1 | devwork.jp postmaster.devwork.jp |
Analysis
Name Server Role
The NS records for devwork.jp point back to devwork.jp itself.
It is common to find dns01.muumuu-domain.com and dns02.muumuu-domain.com serving as name servers together with devwork.jp.
IP Addresses
devwork.jp resolves to just one IP address, 157.7.189.64.
Two other host names, along with posregi.info, add-info.jp and www.ecoracy.com, also share IP numbers with devwork.jp.
Name Servers
The DNS delegation for devwork.jp uses three name servers — devwork.jp, dns01.muumuu-domain.com and dns02.muumuu-domain.com.
There is at least partial name server overlap between devwork.jp and other domains — moritsuke.net, sundays-shop.com, ogawasogyo.com and two more among them.
Each of the three hostnames points to exactly one IP address: devwork.jp points to 157.7.189.64, dns01.muumuu-domain.com points to 202.239.23.39 and dns02.muumuu-domain.com points to 160.251.249.62.
Mail Servers
The sole mail server for devwork.jp is mx.hetemail.jp.
Among the domains sharing a mail server setup with devwork.jp are 114510.work, etounaika-shokaki.com, taiwan-food.jp and two others.
devwork.jp and other domains — btnc.co.jp for instance — share at least some mail servers.
mx.hetemail.jp points to one IP number — 157.7.189.1.