protos21.com - robtex.com
protos21.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 182.48.49.48🇯🇵 SAKURA-C182.48.0.0/18 (6/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www2138.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 | protos21.com ⭐ | ||||||
| A | 182.48.49.48🇯🇵 SAKURA-C182.48.0.0/18 (6/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www2138.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www2138.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2024-04-16 #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=1776240757 | ||||||
MX for
protos21.com |
Same first word
protos21.com |
DNS History
9 records (5 active, 4 former)
●NSmaster.dns.ne.jp2026-04-05 → 2026-04-15 · 3 obs
● 2026-04-05 22:16:18
● 2026-04-15 08:30:10
○NSns.namedserver.net2015-08-08 → 2020-01-07 · 4 obs
● 2020-01-07 12:35:58
○ 2026-04-05 22:16:18
○ 2026-04-15 08:30:10
●NSns1.dns.ne.jp2026-04-05 → 2026-04-15 · 3 obs
● 2026-04-05 22:16:18
● 2026-04-15 08:30:10
●NSns2.dns.ne.jp2026-04-05 → 2026-04-15 · 3 obs
● 2026-04-05 22:16:18
● 2026-04-15 08:30:10
○NSns2.namedserver.net2015-08-08 → 2020-01-07 · 4 obs
● 2020-01-07 12:35:58
○ 2026-04-05 22:16:18
○ 2026-04-15 08:30:10
○MXmx.protos21.com2015-08-08 → 2020-01-07 · 4 obs
● 2020-01-07 12:35:58
○ 2026-04-05 22:16:18
○ 2026-04-15 08:30:10
●MXprotos21.com2026-04-05 → 2026-04-15 · 3 obs
● 2026-04-05 22:16:18
● 2026-04-15 08:30:10
●A182.48.49.482026-04-05 → 2026-04-15 · 3 obs
● 2026-04-05 22:16:18
● 2026-04-15 08:30:10
○A211.13.196.1412015-08-08 → 2020-01-07 · 4 obs
● 2020-01-07 12:35:58
○ 2026-04-05 22:16:18
○ 2026-04-15 08:30:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, g.gtld-servers.net, l.gtld-servers.net, e.gtld-servers.net... | - |
| protos21.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 protos21.com (unsigned zone)
⏱️ Timing
Total: 1066ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 182.48.49.48 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | protos21.com (pri: 10) |
| TXT | 1 | v=spf1 a:www2138.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Mail Server Role
For protos21.com, the mail server is protos21.com.
IP Addresses
protos21.com resolves to one IP number: 182.48.49.48.
other host names including parcoin.com, sogakusya.jp, tooda.jp, trustwell.co.jp and kanyou-m.com share IP numbers with protos21.com.
Name Servers
protos21.com is delegated to three name servers master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
protos21.com at least partially shares name servers with other domains, for instance e-fuku.info, arst.jp, msv-ehc01314.sakura.ne.jp, macklife.sakura.ne.jp and takeuchimusen.com.
these name servers are commonly used alongside ns1.dsn.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
protos21.com is served by a single mail server, protos21.com.
protos21.com resolves to IP 182.48.49.48.