office4d.net - robtex.com
office4d.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 49.212.243.27🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www3517.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 | office4d.net ⭐ | ||||||
| A | 49.212.243.27🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www3517.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www3517.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2024-09-13 #12 | ||||||
net
| 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=1774662562 | ||||||
Previously NS for
office4d.net |
MX for
office4d.net |
Same first word
office4d.net |
DNS History
10 records (5 active, 5 former)
●NSmaster.dns.ne.jp2026-03-27 → 2026-03-28 · 3 obs
● 2026-03-27 17:54:34
● 2026-03-28 01:56:56
●NSns1.dns.ne.jp2026-03-27 → 2026-03-28 · 3 obs
● 2026-03-27 17:54:34
● 2026-03-28 01:56:56
●NSns2.dns.ne.jp2026-03-27 → 2026-03-28 · 3 obs
● 2026-03-27 17:54:34
● 2026-03-28 01:56:56
○NSoffice4d.net2015-08-08 → 2017-02-07 · 4 obs
● 2017-02-07 15:35:38
○ 2026-03-27 17:54:34
○ 2026-03-28 01:56:56
○NSwns01.wadax.ne.jp2015-08-08 → 2017-02-07 · 4 obs
● 2017-02-07 15:35:38
○ 2026-03-27 17:54:34
○ 2026-03-28 01:56:56
○NSwx02.wadax.ne.jp2015-08-08 → 2017-02-07 · 4 obs
● 2017-02-07 15:35:38
○ 2026-03-27 17:54:34
○ 2026-03-28 01:56:56
●MXoffice4d.net2026-03-27 → 2026-03-28 · 3 obs
● 2026-03-27 17:54:34
● 2026-03-28 01:56:56
○MXwh01.wadax.ne.jp2015-08-08 → 2017-02-07 · 4 obs
● 2017-02-07 15:35:38
○ 2026-03-27 17:54:34
○ 2026-03-28 01:56:56
○A211.1.232.722015-08-08 → 2017-02-07 · 4 obs
● 2017-02-07 15:35:38
○ 2026-03-27 17:54:34
○ 2026-03-28 01:56:56
●A49.212.243.272026-03-27 → 2026-03-28 · 3 obs
● 2026-03-27 17:54:34
● 2026-03-28 01:56:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| office4d.net | 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 office4d.net (unsigned zone)
⏱️ Timing
Total: 952ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 49.212.243.27 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | office4d.net (pri: 10) |
| TXT | 1 | v=spf1 a:www3517.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Mail Server Role
office4d.net serves as a mail server for office4d.net.
IP Addresses
office4d.net points to a single IP: 49.212.243.27.
Other host names, for instance qtect.co.jp, edokiriko.org, seamate.co.jp, www3517.sakura.ne.jp and 8-tail.com share IP numbers with office4d.net.
Name Servers
office4d.net is delegated to three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
office4d.net at least partially shares its name servers with other domains, for instance poh.sakura.ne.jp, yellowlynx26.sakura.ne.jp, lotusdns.biz, ctvkyosai-yamagata.or.jp and denki-u.com.
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
office4d.net is handled by a single mail server.
office4d.net points to IP number 49.212.243.27.