null.mail-box.ne.jp - robtex.com
null.mail-box.ne.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 49.212.207.186🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www3146.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 ⚠️ Not in parent delegation | ||||||
| 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 ⚠️ Not in parent delegation | ||||||
| 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 | null.mail-box.ne.jp ⭐ | ||||||
| A | 49.212.207.186🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www3146.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www3146.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2025-02-16 #1 | ||||||
mail-box.ne.jp
| DNSSEC | ⚠️ Not signed | ||||||
| NS | master.dns.ne.jp ⭐ | ||||||
| NS | ns1.dns.ne.jp | ||||||
| NS | ns2.dns.ne.jp | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2026-05-01 #1 | ||||||
MX for
null.mail-box.ne.jp |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●MXnull.mail-box.ne.jp2026-07-04 → 2026-07-04 · 2 obs
● 2026-07-04 13:04:16
●A49.212.207.1862026-07-04 → 2026-07-04 · 2 obs
● 2026-07-04 13:04:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | 15 records |
| mail-box.ne.jp | ns1.dns.ne.jp, ns2.dns.ne.jp | 2 records |
✅ 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 mail-box.ne.jp (unsigned zone)
⏱️ Timing
Total: 2099ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 49.212.207.186 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | null.mail-box.ne.jp (pri: 10) |
| TXT | 1 | v=spf1 a:www3146.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
📌 Glue Records Collected
Total: 17
In-bailiwick: 15 (a.dns.jp, b.dns.jp, c.dns.jp...)
Out-of-bailiwick: 2 (ns1.dns.ne.jp, ns2.dns.ne.jp)
Analysis
Mail Server Role
The MX record for null.mail-box.ne.jp points back to null.mail-box.ne.jp — it is its own mail server.
IP Addresses
null.mail-box.ne.jp directs to one IP number, which is 49.212.207.186.
Among the host names that share IP numbers with null.mail-box.ne.jp are honshu-ichi.sakura.ne.jp, mizoesj.sakura.ne.jp, kagirescue-com.sakura.ne.jp and two others.
Name Servers
null.mail-box.ne.jp has three name servers — master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
The name servers of null.mail-box.ne.jp overlap at least partially with those of other domains — among them fukayajibika.com, syscraft.jp, keihin-hospital.jp and two more.
These name servers commonly appear in combination with the name servers dns.sakura.ad.jp.
Each of the three hostnames points to exactly one IP address: master.dns.ne.jp points to 210.224.172.18, ns1.dns.ne.jp points to 61.211.236.1 and ns2.dns.ne.jp points to 133.167.21.1.
Mail Servers
The MX record for null.mail-box.ne.jp points to a single mail server: null.mail-box.ne.jp.
null.mail-box.ne.jp points to one IP number — 49.212.207.186.