ckworks.jp - robtex.com
ckworks.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 49.212.220.245🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | os3-312-45741.vs.sakura.ne.jp | ||||||
| NS | ns2.ckworks.jp ⭐ | ||||||
| A | 133.242.180.153🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| PTR | ik1-127-70149.vs.sakura.ne.jp | ||||||
| NS | ns.ckworks.jp | ||||||
| A | 49.212.220.245🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | os3-312-45741.vs.sakura.ne.jp | ||||||
| MX | ckworks.jp ⭐ | ||||||
| A | 49.212.220.245🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | os3-312-45741.vs.sakura.ne.jp | ||||||
| TXT | google-site-verification=RYnY_EG8KjnErmPl3ihjEIQPMGomcvRq9gtfESoVJQo | ||||||
| TXT | v=spf1 +mx ~all | ||||||
| SOA | ns.ckworks.jproot@ckworks.jp 2024-12-01 #0 | ||||||
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=1777017603 | ||||||
rank #14938 in the tld
WOT: SAFE (62/100)
📈 Tranco rank: #191,542
MX for
ckworks.jp |
Subdomains
Same first word
Similar names
DNS History
7 records (4 active, 3 former)
●NSns.ckworks.jp2015-08-21 → 2026-04-24 · 2 obs
● 2026-04-24 08:21:56
●NSns2.ckworks.jp2015-08-21 → 2026-04-24 · 2 obs
● 2026-04-24 08:21:56
●MXckworks.jp2015-08-21 → 2026-04-24 · 2 obs
● 2026-04-24 08:21:56
○A153.120.179.2252016-07-27 → 2017-02-17 · 5 obs
● 2016-07-27 09:33:00
● 2017-02-17 06:03:10
○ 2020-02-04 23:32:40
○ 2026-04-24 08:21:56
○A153.127.106.282020-02-04 → 2020-02-19 · 5 obs
● 2020-02-04 23:32:40
● 2020-02-19 01:29:34
○ 2026-04-24 08:21:54
○ 2026-04-24 08:21:56
○A219.94.237.322015-08-21 → 2016-03-27 · 4 obs
● 2016-03-27 13:10:46
○ 2016-07-27 09:33:00
○ 2026-04-24 08:21:56
●A49.212.220.2452026-04-24 → 2026-04-24 · 3 obs
● 2026-04-24 08:21:54
● 2026-04-24 08:21:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | d.dns.jp, g.dns.jp, h.dns.jp, a.dns.jp... | - |
| ckworks.jp | ns.ckworks.jp, ns2.ckworks.jp | 2 records |
✅ Authoritative Response
Server:133.242.180.153
NS records: ns.ckworks.jp, ns2.ckworks.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ckworks.jp (unsigned zone)
⏱️ Timing
Total: 763ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 49.212.220.245 |
| NS | 2 | ns2.ckworks.jp, ns.ckworks.jp |
| MX | 1 | ckworks.jp (pri: 10) |
| TXT | 2 | google-site-verification=RYnY_EG8KjnErmP, v=spf1 +mx ~all |
| SOA | 1 | ns.ckworks.jp root.ckworks.jp |
📌 Glue Records Collected
Total: 2
In-bailiwick: 2 (ns.ckworks.jp, ns2.ckworks.jp)
Analysis
Hierarchy
ckworks.jp is a parent of ns.ckworks.jp and ns2.ckworks.jp.
Mail Server Role
ckworks.jp serves as a mail server for ckworks.jp.
IP Addresses
ckworks.jp points to a single IP: 49.212.220.245.
Other host names such as os3-312-45741.vs.sakura.ne.jp and ns.ckworks.jp share IP numbers with ckworks.jp.
Name Servers
Two name servers ns2.ckworks.jp and ns.ckworks.jp handle delegation for ckworks.jp.
Host names with one IP number: The host name ns2.ckworks.jp points to 133.242.180.153 and the host name ns.ckworks.jp points to 49.212.220.245.
Mail Servers
ckworks.jp is handled by a single mail server, ckworks.jp.
ckworks.jp points to a single IP: 49.212.220.245.