knac21.com - robtex.com
knac21.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2401:2500:101:7:153:120:144:241🇯🇵 SAKURA-A2401:2500::/32 (ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| A | 153.120.144.241🇯🇵 SAKURA-A153.120.128.0/18 (3/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, 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 | knac21.com ⭐ | ||||||
| A | 2401:2500:101:7:153:120:144:241🇯🇵 SAKURA-A2401:2500::/32 (ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| A | 153.120.144.241🇯🇵 SAKURA-A153.120.128.0/18 (3/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| PTR | 241.144.120.153.static.www8713m.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www8713m.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2019-12-23 #19 | ||||||
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=1777405031 | ||||||
MX for
knac21.com |
Same first word
knac21.com |
Similar names
DNS History
12 records (6 active, 6 former)
●NSmaster.dns.ne.jp2017-04-01 → 2026-04-28 · 3 obs
● 2017-04-01 23:09:14
● 2026-04-28 20:04:24
○NSns1.cansystem.net2007-11-04 → 2016-07-18 · 4 obs
● 2016-07-18 02:47:20
○ 2017-04-01 23:09:14
○ 2026-04-28 20:04:24
●NSns1.dns.ne.jp2017-04-01 → 2026-04-28 · 3 obs
● 2017-04-01 23:09:14
● 2026-04-28 20:04:24
○NSns2.cansystem.net2007-11-04 → 2016-07-18 · 4 obs
● 2016-07-18 02:47:20
○ 2017-04-01 23:09:14
○ 2026-04-28 20:04:24
●NSns2.dns.ne.jp2017-04-01 → 2026-04-28 · 3 obs
● 2017-04-01 23:09:14
● 2026-04-28 20:04:24
●MXknac21.com2017-04-01 → 2026-04-28 · 3 obs
● 2017-04-01 23:09:14
● 2026-04-28 20:04:24
○MXwww.knac21.com2007-11-04 → 2016-07-18 · 4 obs
● 2016-07-18 02:47:20
○ 2017-04-01 23:09:14
○ 2026-04-28 20:04:24
●A153.120.144.2412020-02-21 → 2026-04-28 · 3 obs
● 2020-02-21 23:40:10
● 2026-04-28 20:04:24
○A210.188.250.752007-11-04 → 2007-11-04 · 3 obs
○ 2015-08-15 22:53:02
○ 2026-04-28 20:04:24
●A2401:2500:101:7:153:120:144:2412020-02-21 → 2026-04-28 · 3 obs
● 2020-02-21 23:40:10
● 2026-04-28 20:04:24
○A49.212.198.1972017-04-01 → 2017-04-01 · 4 obs
● 2017-04-01 23:09:14
○ 2020-02-21 23:40:10
○ 2026-04-28 20:04:24
○A59.106.29.52015-08-15 → 2016-07-18 · 5 obs
● 2015-08-15 22:53:02
● 2016-07-18 02:47:20
○ 2017-04-01 23:09:14
○ 2026-04-28 20:04:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | e.gtld-servers.net, d.gtld-servers.net, c.gtld-servers.net, h.gtld-servers.net... | - |
| knac21.com | 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 knac21.com (unsigned zone)
⏱️ Timing
Total: 1512ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 153.120.144.241 |
| AAAA | 1 | 2401:2500:101:7:153:120:144:241 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | knac21.com (pri: 10) |
| TXT | 1 | v=spf1 a:www8713m.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Mail Server Role
knac21.com serves as a mail server for knac21.com.
IP Addresses
knac21.com points to two IP numbers: 2401:2500:101:7:153:120:144:241 and 153.120.144.241.
Other host names, for instance densetsu-s.co.jp, miyawaki.info, masudazaimoku.com, honobono-kai.com and iimo1.sakura.ne.jp share IP numbers with knac21.com.
Name Servers
knac21.com is delegated to three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
knac21.com at least partially shares its name servers with other domains, for instance facis.jp, gr-net-co.jp, cloudbank.jp, kyoto-hp.com and asahiworks.com.
These name servers are often used together with the name servers dns.sakura.ad.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
knac21.com is handled by a single mail server.
Hostname knac21.com resolves to two IPs: 2401:2500:101:7:153:120:144:241 and 153.120.144.241.