rsdtec.com - dns.ninja
rsdtec.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 163.43.102.79🇯🇵 SAKURA-B163.43.0.0/16 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan | ||||||
| PTR | www3869.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 | rsdtec.com ⭐ | ||||||
| A | 163.43.102.79🇯🇵 SAKURA-B163.43.0.0/16 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan | ||||||
| PTR | www3869.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www3869.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2018-10-02 #11 | ||||||
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=1786184149 | ||||||
Previously NS for
MX for
rsdtec.com |
Previously MX for
mail.rsdtec.com |
Subdomains
mail.rsdtec.com |
Same first word
rsdtec.com |
Similar names
drstec.com |
sdctre.com |
sdcert.net |
cestdr.com |
rdstec.com.br |
dcerts.com |
dtrsec.com |
rdstec.com |
sdcert.org |
crestd.com |
rdcets.com |
cdtser.com |
cdrest.cz |
rdstec.co.uk |
cdster.com |
credts.com |
redsct.com |
tdrecs.com |
DNS History
8 records (5 active, 3 former)
●NSmaster.dns.ne.jp2020-02-20 → 2026-08-08 · 3 obs
● 2020-02-20 09:47:26
● 2026-08-08 10:26:10
●NSns1.dns.ne.jp2020-02-20 → 2026-08-08 · 3 obs
● 2020-02-20 09:47:26
● 2026-08-08 10:26:10
●NSns2.dns.ne.jp2020-02-20 → 2026-08-08 · 3 obs
● 2020-02-20 09:47:26
● 2026-08-08 10:26:10
○NSrsdtec.com2015-08-10 → 2017-03-22 · 5 obs
● 2015-08-10 18:58:18
● 2017-03-22 17:20:30
○ 2020-02-20 09:47:26
○ 2026-08-08 10:26:10
○NSwww.rsdtec.com2007-12-06 → 2007-12-06 · 3 obs
○ 2015-08-10 18:58:18
○ 2026-08-08 10:26:10
●MXrsdtec.com2015-08-10 → 2026-08-08 · 3 obs
● 2015-08-10 18:58:18
● 2026-08-08 10:26:10
●A163.43.102.792020-02-20 → 2026-08-08 · 3 obs
● 2020-02-20 09:47:26
● 2026-08-08 10:26:10
○A202.218.234.1702015-08-10 → 2017-03-22 · 5 obs
● 2015-08-10 18:58:18
● 2017-03-22 17:20:30
○ 2020-02-20 09:47:26
○ 2026-08-08 10:26:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, a.gtld-servers.net, d.gtld-servers.net, j.gtld-servers.net... | - |
| rsdtec.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 rsdtec.com (unsigned zone)
⏱️ Timing
Total: 954ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 163.43.102.79 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | rsdtec.com (pri: 10) |
| TXT | 1 | v=spf1 a:www3869.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Hierarchy
rsdtec.com is the parent zone for mail.rsdtec.com.
Mail Server Role
rsdtec.com serves as a mail server for rsdtec.com.
IP Addresses
rsdtec.com has exactly one IP address — 163.43.102.79.
www3869.sakura.ne.jp, h-foodconsul.com, jus.co.jp plus two other host names have IP numbers in common with rsdtec.com.
Name Servers
DNS for rsdtec.com is handled by three authoritative name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
rsdtec.com partially shares its NS delegation with several other domains, including sayurin.net, zestgrain.com, shozankan-shop.sakura.ne.jp and two others.
These name servers often co-occur with the name servers dns.sakura.ad.jp.
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
rsdtec.com uses exactly one mail server, which is rsdtec.com.
rsdtec.com has exactly one IP number: 163.43.102.79.