cha-ken.info - robtex.com
cha-ken.info
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2403:3a00:101:11:112:78:112:54🇯🇵 SAKURA-C2403:3a00::/32 SAKURA Internet // OSAKA BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| PTR | www1744.sakura.ne.jp | ||||||
| A | 112.78.112.54🇯🇵 SAKURA-C112.78.112.0/20 (4/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| 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 | cha-ken.info ⭐ | ||||||
| A | 2403:3a00:101:11:112:78:112:54🇯🇵 SAKURA-C2403:3a00::/32 SAKURA Internet // OSAKA BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| PTR | www1744.sakura.ne.jp | ||||||
| A | 112.78.112.54🇯🇵 SAKURA-C112.78.112.0/20 (4/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www1744.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www1744.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2026-01-26 #22 | ||||||
info
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.info.afilias-nst.info ⭐ | ||||||
| NS | a2.info.afilias-nst.info | ||||||
| NS | b0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | b2.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | c0.info.afilias-nst.info | ||||||
| NS | d0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| SOA | a0.info.afilias-nst.infohostmaster@donuts.email serial=1776974991 | ||||||
MX for
cha-ken.info |
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●MXcha-ken.info2026-04-04 → 2026-04-23 · 2 obs
● 2026-04-23 20:47:36
●A112.78.112.542026-04-04 → 2026-04-23 · 2 obs
● 2026-04-23 20:47:36
●A2403:3a00:101:11:112:78:112:542026-04-04 → 2026-04-23 · 2 obs
● 2026-04-23 20:47:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| info | a0.info.afilias-nst.info, a2.info.afilias-nst.info, b0.info.afilias-nst.org, b2.info.afilias-nst.org... | 12 records |
| cha-ken.info | ns1.dns.ne.jp, ns2.dns.ne.jp | - |
✅ Authoritative Response
Server:61.211.236.1
NS records: ns1.dns.ne.jp, ns2.dns.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cha-ken.info (unsigned zone)
⏱️ Timing
Total: 1019ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 112.78.112.54 |
| AAAA | 1 | 2403:3a00:101:11:112:78:112:54 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | cha-ken.info (pri: 10) |
| TXT | 1 | v=spf1 a:www1744.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
📌 Glue Records Collected
Total: 12
In-bailiwick: 6 (a0.info.afilias-nst.info, a0.info.afilias-nst.info, a2.info.afilias-nst.info...)
Out-of-bailiwick: 6 (b0.info.afilias-nst.org, b0.info.afilias-nst.org, b2.info.afilias-nst.org...)
Analysis
Mail Server Role
For cha-ken.info, the mail server is cha-ken.info.
IP Addresses
cha-ken.info resolves to two IP numbers: 2403:3a00:101:11:112:78:112:54 and 112.78.112.54.
other host names including withwiki.net, mail.araitakuo.com, esupport.jp, rakuchin.sakura.ne.jp and upmsys.com share IP numbers with cha-ken.info.
Name Servers
cha-ken.info is delegated to three name servers master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
cha-ken.info at least partially shares name servers with other domains, for instance bizplussolution.co.jp, coco-search.com, kuju.jp, so-inc.net and hagio.net.
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
cha-ken.info is served by a single mail server, cha-ken.info.
cha-ken.info resolves to two IP numbers: 2403:3a00:101:11:112:78:112:54 and 112.78.112.54.