oi21.net - robtex.com
oi21.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 163.44.185.219🇯🇵 GMO-INTERNET163.44.176.0/20 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | 163-44-185-219.virt.lolipop.jp | ||||||
| NS | oi21.net ⭐ | ||||||
| A | 163.44.185.219🇯🇵 GMO-INTERNET163.44.176.0/20 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | 163-44-185-219.virt.lolipop.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 | mx01.lolipop.jp ⭐ | ||||||
| A | 157.7.107.233🇯🇵 GMO-INTERNET157.7.64.0/18 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| TXT | v=spf1 include:_spf.lolipop.jp ~all | ||||||
| SOA | oi21.netpostmaster@oi21.net serial=1649935414 | ||||||
net
| 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 ⚠️ Not in parent delegation | ||||||
| NS | l.gtld-servers.net ⚠️ Not in parent delegation | ||||||
| NS | m.gtld-servers.net ⚠️ Not in parent delegation | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1785669522 | ||||||
NS for
oi21.net |
Subdomains
kawaguchi.oi21.net |
Same first word
oi21.net |
Similar names
DNS History
7 records (5 active, 2 former)
●NSdns01.muumuu-domain.com2015-08-13 → 2026-08-02 · 3 obs
● 2015-08-13 02:23:00
● 2026-08-02 11:37:42
●NSdns02.muumuu-domain.com2015-08-13 → 2026-08-02 · 3 obs
● 2015-08-13 02:23:00
● 2026-08-02 11:37:42
●NSoi21.net2015-08-13 → 2026-08-02 · 3 obs
● 2015-08-13 02:23:00
● 2026-08-02 11:37:42
●MXmx01.lolipop.jp2015-08-13 → 2026-08-02 · 3 obs
● 2015-08-13 02:23:00
● 2026-08-02 11:37:42
○A157.7.107.452016-05-23 → 2017-07-09 · 5 obs
● 2016-05-23 23:52:24
● 2017-07-09 06:39:40
○ 2026-06-21 16:18:44
○ 2026-08-02 11:37:42
●A163.44.185.2192026-06-21 → 2026-08-02 · 3 obs
● 2026-06-21 16:18:44
● 2026-08-02 11:37:42
○A203.189.109.2402015-08-13 → 2016-03-28 · 5 obs
● 2015-08-13 02:23:00
● 2016-03-28 19:11:10
○ 2016-05-23 23:52:24
○ 2026-08-02 11:37:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, f.gtld-servers.net, h.gtld-servers.net, b.gtld-servers.net... | - |
| oi21.net | dns01.muumuu-domain.com, dns02.muumuu-domain.com | - |
✅ 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 oi21.net (unsigned zone)
⏱️ Timing
Total: 803ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 163.44.185.219 |
| NS | 2 | dns02.muumuu-domain.com, dns01.muumuu-domain.com |
| MX | 1 | mx01.lolipop.jp (pri: 50) |
| TXT | 1 | v=spf1 include:_spf.lolipop.jp ~all |
| SOA | 1 | oi21.net postmaster.oi21.net |
Analysis
Hierarchy
oi21.net serves as the parent of kawaguchi.oi21.net.
Name Server Role
oi21.net acts as a name server for oi21.net, meaning it is self-referentially delegated.
The name servers dns01.muumuu-domain.com and dns02.muumuu-domain.com are often paired with oi21.net.
IP Addresses
oi21.net resolves to one IP address: 163.44.185.219.
dropin.jp, terasoku.net, akasaka-office.com and two other host names share IP numbers with oi21.net.
Name Servers
The NS records for oi21.net list three name servers: oi21.net, dns01.muumuu-domain.com and dns02.muumuu-domain.com.
oi21.net has at least partial name server overlap with other domains, such as okatsubo.com, trendyheadlines.com, mariha.jp and two others.
oi21.net has IP address 163.44.185.219, dns01.muumuu-domain.com has IP address 202.239.23.39 and dns02.muumuu-domain.com has IP address 160.251.249.62 — one address each.
Mail Servers
Mail for oi21.net is handled by a single mail server, mx01.lolipop.jp.
oi21.net uses an identical mail server configuration to several other domains — among them tajima-ya.biz, switty.co.jp, line-support.com and two more.
mx01.lolipop.jp resolves to 157.7.107.233 and no other IP number.