deno21.com - robtex.com
deno21.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 49.212.243.63🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www3553.sakura.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 | deno21.com ⭐ | ||||||
| A | 49.212.243.63🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www3553.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www3553.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2026-06-17 #15 | ||||||
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=1786405669 | ||||||
Previously NS for
deno21.com |
MX for
deno21.com |
Same first word
deno21.com |
Similar names
DNS History
9 records (5 active, 4 former)
○NSdeno21.com2015-07-07 → 2017-08-21 · 4 obs
● 2017-08-21 08:56:06
○ 2026-07-16 19:12:04
○ 2026-08-11 00:10:28
●NSmaster.dns.ne.jp2026-07-16 → 2026-08-11 · 3 obs
● 2026-07-16 19:12:04
● 2026-08-11 00:10:28
●NSns1.dns.ne.jp2026-07-16 → 2026-08-11 · 3 obs
● 2026-07-16 19:12:04
● 2026-08-11 00:10:28
●NSns2.dns.ne.jp2026-07-16 → 2026-08-11 · 3 obs
● 2026-07-16 19:12:04
● 2026-08-11 00:10:28
○NSnsp.dnd.jp2015-07-07 → 2017-08-21 · 4 obs
● 2017-08-21 08:56:06
○ 2026-07-16 19:12:04
○ 2026-08-11 00:10:28
○NSnsq.dnd.jp2015-07-07 → 2017-08-21 · 4 obs
● 2017-08-21 08:56:06
○ 2026-07-16 19:12:04
○ 2026-08-11 00:10:28
●MXdeno21.com2026-07-16 → 2026-08-11 · 3 obs
● 2026-07-16 19:12:04
● 2026-08-11 00:10:28
○MXnsr.dnd.jp2015-07-07 → 2017-08-21 · 4 obs
● 2017-08-21 08:56:06
○ 2026-07-16 19:12:04
○ 2026-08-11 00:10:28
●A49.212.243.632026-07-16 → 2026-08-11 · 2 obs
● 2026-08-11 00:10:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| deno21.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 deno21.com (unsigned zone)
⏱️ Timing
Total: 1139ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 49.212.243.63 |
| NS | 2 | ns2.dns.ne.jp, ns1.dns.ne.jp |
| MX | 1 | deno21.com (pri: 10) |
| TXT | 1 | v=spf1 a:www3553.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Mail Server Role
deno21.com handles its own mail, functioning as its own mail server.
IP Addresses
deno21.com resolves to just one IP address, 49.212.243.63.
Two other host names, along with mangahack.com, ibaraduka.or.jp and zennet.co.jp, also share IP numbers with deno21.com.
Name Servers
DNS for deno21.com is handled by three authoritative name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
The name servers of deno21.com overlap at least partially with those of other domains — among them seasidevalley.com, yorozu-viet.com, kamisugi-hdc.sakura.ne.jp and two more.
master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp all have one IP address each — master.dns.ne.jp directs to 210.224.172.18, ns1.dns.ne.jp directs to 61.211.236.1 and ns2.dns.ne.jp directs to 133.167.21.1.
Mail Servers
deno21.com is served by just one mail server: deno21.com.
deno21.com has exactly one IP number: 49.212.243.63.