co-sumakura.com - robtex.com
co-sumakura.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 210.157.79.83🇯🇵 XSERVER-AS210.157.78.0/23 XSERVER Inc. | ||||||
| PTR | sv3082.wpx.ne.jp | ||||||
| NS | master.dns.ne.jp ⭐ | ||||||
| A | 210.224.172.18🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | master.dns.ne.jp | ||||||
| NS | ns1.dns.ne.jp | ||||||
| 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 | ||||||
| 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 | ||||||
| MX | co-sumakura.com ⭐ | ||||||
| A | 210.157.79.83🇯🇵 XSERVER-AS210.157.78.0/23 XSERVER Inc. | ||||||
| PTR | sv3082.wpx.ne.jp | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2024-08-08 #1 | ||||||
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=1777482431 | ||||||
MX for
co-sumakura.com |
Same first word
co-sumakura.com |
DNS History
9 records (5 active, 4 former)
●NSmaster.dns.ne.jp2026-03-29 → 2026-04-29 · 3 obs
● 2026-03-29 11:20:22
● 2026-04-29 17:21:28
○NSns.namedserver.net2016-12-16 → 2018-01-11 · 4 obs
● 2018-01-11 08:55:52
○ 2026-03-29 11:20:22
○ 2026-04-29 17:21:28
●NSns1.dns.ne.jp2026-03-29 → 2026-04-29 · 3 obs
● 2026-03-29 11:20:22
● 2026-04-29 17:21:28
●NSns2.dns.ne.jp2026-03-29 → 2026-04-29 · 3 obs
● 2026-03-29 11:20:22
● 2026-04-29 17:21:28
○NSns2.namedserver.net2016-12-16 → 2018-01-11 · 4 obs
● 2018-01-11 08:55:52
○ 2026-03-29 11:20:22
○ 2026-04-29 17:21:28
●MXco-sumakura.com2026-03-29 → 2026-04-29 · 3 obs
● 2026-03-29 11:20:22
● 2026-04-29 17:21:28
○MXmx.co-sumakura.com2016-12-16 → 2018-01-11 · 4 obs
● 2018-01-11 08:55:52
○ 2026-03-29 11:20:22
○ 2026-04-29 17:21:28
●A210.157.79.832026-03-29 → 2026-04-29 · 3 obs
● 2026-03-29 11:20:22
● 2026-04-29 17:21:28
○A211.13.196.1332016-12-16 → 2018-01-11 · 4 obs
● 2018-01-11 08:55:52
○ 2026-03-29 11:20:22
○ 2026-04-29 17:21:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| co-sumakura.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 co-sumakura.com (unsigned zone)
⏱️ Timing
Total: 382ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 210.157.79.83 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | co-sumakura.com (pri: 10) |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Mail Server Role
co-sumakura.com serves as a mail server for co-sumakura.com.
IP Addresses
co-sumakura.com points to a single IP: 210.157.79.83.
Other host names, for instance tcnc.co.jp, sv3082.wpx.ne.jp, mail.createway.jp, roman-(0x706f726e).com and www2.createway.jp share IP numbers with co-sumakura.com.
Name Servers
co-sumakura.com is delegated to three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
co-sumakura.com at least partially shares its name servers with other domains, for instance top-league.jp, kouinafiri.sakura.ne.jp, www.showcase.co.jp, borderless-corp.com and ash-inf.sakura.ne.jp.
Host names with one IP number:
master.dns.ne.jp points to: 210.224.172.18.
ns1.dns.ne.jp points to: 61.211.236.1.
ns2.dns.ne.jp points to: 133.167.21.1.
Mail Servers
co-sumakura.com is handled by a single mail server.
co-sumakura.com points to IP number 210.157.79.83.