y-zu.com - robtex.com
y-zu.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | y-zu.com ⭐ | ||||||
| NS | dnss10.so-net.ne.jp | ||||||
| A | 210.139.255.1🇯🇵 So-net210.139.128.0/17 Sony Network Communications Inc. | ||||||
| PTR | dnss10.so-net.ne.jp | ||||||
| NS | dnss11.so-net.ne.jp | ||||||
| A | 210.139.255.17🇯🇵 So-net210.139.128.0/17 Sony Network Communications Inc. | ||||||
| PTR | dnss11.so-net.ne.jp | ||||||
| MX | sonet-common-mx.xspmail.jp ⭐ | ||||||
| A | 2001:240:bb81:94:160:13:60:174🇯🇵 IIJ-AS2001:240::/32 IIJ IPv6 BLOCK ( AS2497 ) | ||||||
| PTR | sonet-common-mx.xspmail.jp | ||||||
| A | 160.13.60.174🇯🇵 IIJ-AS160.13.0.0/16 IIJ IPv4 BLOCK ( AS2497 ) | ||||||
| PTR | sonet-common-mx.xspmail.jp | ||||||
| TXT | v=spf1 +include:plusdomain.spf.so-net.ne.jp ~all | ||||||
| SOA | y-zu.comhostmaster@y-zu.com serial=2602171610 | ||||||
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=1778813731 | ||||||
NS for
y-zu.com |
Same first word
DNS History
5 records (4 active, 1 former)
●NSdnss10.so-net.ne.jp2015-06-01 → 2026-05-15 · 2 obs
● 2026-05-15 03:09:44
●NSdnss11.so-net.ne.jp2015-06-01 → 2026-05-15 · 2 obs
● 2026-05-15 03:09:44
●NSy-zu.com2015-06-01 → 2026-05-15 · 2 obs
● 2026-05-15 03:09:44
○MXmxpin.ms.so-net.ne.jp2015-06-01 → 2017-04-20 · 4 obs
● 2017-04-20 07:15:22
○ 2026-05-13 08:20:44
○ 2026-05-15 03:09:44
●MXsonet-common-mx.xspmail.jp2026-05-13 → 2026-05-15 · 3 obs
● 2026-05-13 08:20:44
● 2026-05-15 03:09:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| y-zu.com | dnss10.so-net.ne.jp, dnss11.so-net.ne.jp | - |
✅ Authoritative Response
Server:210.139.255.17
NS records: dnss10.so-net.ne.jp, dnss11.so-net.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for y-zu.com (unsigned zone)
⏱️ Timing
Total: 874ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dnss10.so-net.ne.jp, dnss11.so-net.ne.jp |
| MX | 1 | sonet-common-mx.xspmail.jp (pri: 10) |
| TXT | 1 | v=spf1 +include:plusdomain.spf.so-net.ne |
| SOA | 1 | y-zu.com hostmaster.y-zu.com |
Analysis
Name Server Role
y-zu.com serves as a name server for y-zu.com.
dnss10.so-net.ne.jp and dnss11.so-net.ne.jp are commonly used as name servers along with y-zu.com.
Name Servers
y-zu.com is delegated to three name servers: y-zu.com, dnss10.so-net.ne.jp and dnss11.so-net.ne.jp.
y-zu.com at least partially shares name servers with other domains, for instance nishikama-cl.jp, sokkhan.com, mhlcli.com, akabou-ike.com and fruits-republic.co.jp.
Host names with one IP number: dnss10.so-net.ne.jp points to 210.139.255.1; dnss11.so-net.ne.jp points to 210.139.255.17.
Mail Servers
y-zu.com is handled by a single mail server, sonet-common-mx.xspmail.jp.
y-zu.com uses the same mail server configuration as other domains, such as amuse-company.jp, jib-inc.com, jpcorp.jp, hokahoka-gohan.jp and shinei-transport.jp.
y-zu.com shares mail servers with other domains at least in part, for instance daikikogyo.com, ad-bridge.biz, mov-e.net, kijima-acbs.com and koma9.com.
sonet-common-mx.xspmail.jp resolves to two IP numbers: 2001:240:bb81:94:160:13:60:174 and 160.13.60.174.