u1-s.com - robtex.com
u1-s.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.dns.ne.jp ⚠️ Not in zone NS records | ||||||
| A | 61.211.236.1🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | ns1.dns.ne.jp | ||||||
| NS | ns2.dns.ne.jp ⚠️ Not in zone NS records | ||||||
| A | 133.167.21.1🇯🇵 SAKURA-C133.167.21.0/24 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan | ||||||
| PTR | ns2.dns.ne.jp | ||||||
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=1781446310 | ||||||
Previously MX for
u1-s.com |
Same first word
u1-s.com |
Similar names
DNS History
5 records (2 active, 3 former)
○NSmaster.dns.ne.jp2015-05-08 → 2017-05-29 · 4 obs
● 2017-05-29 14:14:20
○ 2026-03-31 15:22:44
○ 2026-06-14 14:33:00
○MXu1-s.com2015-05-08 → 2017-05-29 · 4 obs
● 2017-05-29 14:14:20
○ 2026-03-31 15:22:44
○ 2026-06-14 14:33:00
○A59.106.171.762015-05-08 → 2017-05-29 · 4 obs
● 2017-05-29 14:14:20
○ 2026-03-31 15:22:44
○ 2026-06-14 14:33:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| u1-s.com | ns1.dns.ne.jp, ns2.dns.ne.jp | - |
✅ Authoritative Response
Server:133.167.21.1
NS records: ns1.dns.ne.jp, ns2.dns.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for u1-s.com (unsigned zone)
⏱️ Timing
Total: 937ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
Analysis
Name Servers
The NS records for u1-s.com delegate to ns1.dns.ne.jp and ns2.dns.ne.jp.
u1-s.com uses the same name servers as several other domains — among them mail.takabosoft.com, mail.sk-trust.jp, webquest.co.jp and two more.
The name servers of u1-s.com overlap at least partially with those of other domains — among them happy-home.co.jp, iwtf-j.sakura.ne.jp, web-it.jp and two more.
These name servers commonly appear in combination with the name servers master.dns.ne.jp.
Both ns1.dns.ne.jp and ns2.dns.ne.jp have a single IP address each — ns1.dns.ne.jp resolves to 61.211.236.1 while ns2.dns.ne.jp resolves to 133.167.21.1.