u-go.jp - robtex.com
u-go.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 157.7.44.240🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | users203.vip.heteml.jp | ||||||
| NS | u-go.jp ⭐ | ||||||
| A | 157.7.44.240🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | users203.vip.heteml.jp | ||||||
| NS | dns.itecjapan.jp | ||||||
| A | 211.133.244.26🇯🇵 IDC211.133.240.0/21 Frontier Inc. | ||||||
| NS | sv1.itecjapan.ne.jp | ||||||
| A | 202.241.202.253🇯🇵 IDC202.241.192.0/18 Frontier Inc. | ||||||
| NS | sv3.itecjapan.ne.jp | ||||||
| A | 172.237.7.135🇺🇸 AKAMAI-LINODE-AP172.237.0.0/19 Akamai Technologies | ||||||
| PTR | sv3.itecjapan.ne.jp | ||||||
| MX | mail33.heteml.jp ⭐ | ||||||
| A | 157.7.189.15🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | mail-proxy.heteml.jp | ||||||
| TXT | v=spf1 ip4:112.78.219.235 ip4:211.133.244.11 +a:taku-hi.cleaningsenka.jp incl... | ||||||
| SOA | u-go.jppostmaster@u-go.jp 2023-07-19 #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=1786362303 | ||||||
NS for
u-go.jp |
Same first word
Similar names
DNS History
9 records (6 active, 3 former)
●NSdns.itecjapan.jp2015-08-21 → 2026-08-10 · 2 obs
● 2026-08-10 11:57:16
○NSsv.u-go.jp2015-08-21 → 2016-07-31 · 4 obs
● 2016-07-31 07:17:36
○ 2016-12-04 07:26:52
○ 2026-08-10 11:57:16
●NSsv1.itecjapan.ne.jp2015-08-21 → 2026-08-10 · 2 obs
● 2026-08-10 11:57:16
●NSsv3.itecjapan.ne.jp2015-08-21 → 2026-08-10 · 2 obs
● 2026-08-10 11:57:16
●NSu-go.jp2016-12-04 → 2026-08-10 · 3 obs
● 2016-12-04 07:26:52
● 2026-08-10 11:57:16
○A133.130.45.782016-12-04 → 2017-07-14 · 5 obs
● 2016-12-04 07:26:52
● 2017-07-14 00:20:30
○ 2026-07-13 17:32:40
○ 2026-08-10 11:57:16
●A157.7.44.2402026-07-13 → 2026-08-10 · 3 obs
● 2026-07-13 17:32:40
● 2026-08-10 11:57:16
○A182.48.26.302015-08-21 → 2016-07-31 · 4 obs
● 2016-07-31 07:17:36
○ 2016-12-04 07:26:52
○ 2026-08-10 11:57:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| u-go.jp | dns.itecjapan.jp, sv1.itecjapan.ne.jp, sv3.itecjapan.ne.jp | 3 records |
✅ Authoritative Response
Server:172.237.7.135
NS records: dns.itecjapan.jp, sv1.itecjapan.ne.jp, sv3.itecjapan.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for u-go.jp (unsigned zone)
⏱️ Timing
Total: 769ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 157.7.44.240 |
| NS | 3 | sv3.itecjapan.ne.jp, dns.itecjapan.jp... |
| MX | 1 | mail33.heteml.jp (pri: 10) |
| TXT | 1 | v=spf1 ip4:112.78.219.235 ip4:211.133.24 |
| SOA | 1 | u-go.jp postmaster.u-go.jp |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (sv3.itecjapan.ne.jp, sv1.itecjapan.ne.jp, dns.itecjapan.jp)
Analysis
Name Server Role
The NS records for u-go.jp point back to u-go.jp itself.
dns.itecjapan.jp, sv1.itecjapan.ne.jp and sv3.itecjapan.ne.jp are often grouped with u-go.jp to function as name servers.
IP Addresses
u-go.jp resolves to just one IP address, 157.7.44.240.
Two other host names, along with asaiwasai.com, ks-n.com and www.hagakure.works, also share IP numbers with u-go.jp.
Name Servers
Four name servers handle the DNS delegation for u-go.jp: u-go.jp, dns.itecjapan.jp, sv1.itecjapan.ne.jp and sv3.itecjapan.ne.jp.
u-go.jp has at least partial name server overlap with other domains, such as mix-max.jp, jabank-saitama.or.jp, aizu-staff.jp and two others.
It is common to see these name servers used together with name servers mail.mix-max.jp and radio-cafe.co.jp.
The hosts u-go.jp, dns.itecjapan.jp, sv1.itecjapan.ne.jp and sv3.itecjapan.ne.jp all resolve to exactly one IP address each: 157.7.44.240, 211.133.244.26, 202.241.202.253 and 172.237.7.135 respectively.
Mail Servers
The sole mail server for u-go.jp is mail33.heteml.jp.
Among the domains sharing a mail server setup with u-go.jp are effect.run, kanzaki-ent.com, asobinin.biz and two others.
u-go.jp partially shares its mail servers with other domains; known examples include syoku-ken.org, croatia.jp and kk-hu.com.
These mail servers frequently co-occur with the mail servers aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.
mail33.heteml.jp resolves to 157.7.189.15 and no other IP number.