kozaisteel.com - robtex.com
kozaisteel.com
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=1775931617 | ||||||
Subdomains
www.kozaisteel.com |
Same first word
kozaisteel.com |
DNS History
12 records (6 active, 6 former)
○NSdns1.hakata.co.jp2015-06-24 → 2017-02-07 · 4 obs
● 2017-02-07 06:35:14
○ 2026-04-11 18:44:30
○ 2026-04-11 18:44:32
○NSdns2.hakata.co.jp2015-06-24 → 2017-02-07 · 4 obs
● 2017-02-07 06:35:14
○ 2026-04-11 18:44:30
○ 2026-04-11 18:44:32
●NSskydns11.otsuka-office365.jp2026-04-11 → 2026-04-11 · 3 obs
● 2026-04-11 18:44:30
● 2026-04-11 18:44:32
●NSskydns12.otsuka-office365.jp2026-04-11 → 2026-04-11 · 3 obs
● 2026-04-11 18:44:30
● 2026-04-11 18:44:32
●NSskydns13.otsuka-office365.jp2026-04-11 → 2026-04-11 · 3 obs
● 2026-04-11 18:44:30
● 2026-04-11 18:44:32
●NSskydns99.otsuka-office365.jp2026-04-11 → 2026-04-11 · 3 obs
● 2026-04-11 18:44:30
● 2026-04-11 18:44:32
●MXkozaisteel-com.mail.protection.outlook.com2026-04-11 → 2026-04-11 · 3 obs
● 2026-04-11 18:44:30
● 2026-04-11 18:44:32
○MXkozaisteel.com2015-06-24 → 2017-02-07 · 4 obs
● 2017-02-07 06:35:14
○ 2026-04-11 18:44:30
○ 2026-04-11 18:44:32
○MXmail2.hakata.co.jp2015-06-24 → 2017-02-07 · 4 obs
● 2017-02-07 06:35:14
○ 2026-04-11 18:44:30
○ 2026-04-11 18:44:32
○A122.209.195.432015-06-24 → 2016-01-31 · 4 obs
● 2016-01-31 22:12:06
○ 2016-05-06 03:53:20
○ 2026-04-11 18:44:32
○A153.120.124.2142016-05-06 → 2017-02-07 · 5 obs
● 2016-05-06 03:53:20
● 2017-02-07 06:35:14
○ 2026-04-11 18:44:30
○ 2026-04-11 18:44:32
●A210.236.247.852026-04-11 → 2026-04-11 · 3 obs
● 2026-04-11 18:44:30
● 2026-04-11 18:44:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | j.gtld-servers.net, i.gtld-servers.net, c.gtld-servers.net, b.gtld-servers.net... | - |
| kozaisteel.com | skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp | - |
✅ Authoritative Response
Server:157.205.160.51
NS records: skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for kozaisteel.com (unsigned zone)
⏱️ Timing
Total: 1384ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 210.236.247.85 |
| NS | 3 | skydns11.otsuka-office365.jp, skydns13.otsuka-office365.jp... |
| MX | 1 | kozaisteel-com.mail.protection.outlook.c |
| TXT | 1 | v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | skydns99.otsuka-office365.jp hostmaster. |
Analysis
Hierarchy
kozaisteel.com is the parent of www.kozaisteel.com.
IP Addresses
kozaisteel.com resolves to one IP number: 210.236.247.85.
other host names including kouchikukai.or.jp, with-g.com, hm-sheet.com, fukuyoka.com and www.kozaisteel.com share IP numbers with kozaisteel.com.
Name Servers
kozaisteel.com is delegated to four name servers: skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp and skydns99.otsuka-office365.jp.
kozaisteel.com at least partially shares name servers with other domains, for instance shinanoa.co.jp, kongobyora.co.jp, kurata-web.co.jp, yn-sekkei.net and yaosouken.co.jp.
Host names with one IP number: skydns11.otsuka-office365.jp points to 157.205.203.141; skydns12.otsuka-office365.jp points to 157.205.160.35; skydns13.otsuka-office365.jp points to 157.205.160.51; skydns99.otsuka-office365.jp points to 157.205.203.139.
Mail Servers
kozaisteel.com is handled by a single mail server, kozaisteel-com.mail.protection.outlook.com.
Host kozaisteel-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:cc1a::2, 2a01:111:f403:cc1f::, 2a01:111:f403:cc1f::1, 2a01:111:f403:cc24::, 52.101.124.0, 52.101.124.5, 52.101.124.6 and 52.101.157.10.