first-1.jp - robtex.com
first-1.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 219.94.155.217🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www427b.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 | first-1.jp ⭐ | ||||||
| A | 219.94.155.217🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www427b.sakura.ne.jp | ||||||
| TXT | google-site-verification=Lt6Re9sfin5T9aJaE92xWwB2CV0PnhLaiUZuf8zBhsc | ||||||
| TXT | v=spf1 a:www427b.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2026-02-23 #1 | ||||||
jp
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | z.dns.jp ⭐ | ||||||
| NS | a.dns.jp | ||||||
| NS | b.dns.jp | ||||||
| NS | c.dns.jp | ||||||
| NS | d.dns.jp | ||||||
| NS | e.dns.jp | ||||||
| NS | f.dns.jp | ||||||
| NS | g.dns.jp | ||||||
| NS | h.dns.jp | ||||||
| SOA | z.dns.jproot@dns.jp serial=1776117603 | ||||||
MX for
first-1.jp |
Same first word
DNS History
6 records (5 active, 1 former)
●MXfirst-1.jp2016-01-29 → 2026-04-13 · 2 obs
● 2026-04-13 22:43:44
●A219.94.155.2172026-04-06 → 2026-04-13 · 3 obs
● 2026-04-06 17:16:06
● 2026-04-13 22:43:44
○A59.106.27.2202016-01-29 → 2018-08-21 · 4 obs
● 2018-08-21 12:15:24
○ 2026-04-06 17:16:06
○ 2026-04-13 22:43:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| first-1.jp | ns1.dns.ne.jp, ns2.dns.ne.jp | 2 records |
✅ 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 first-1.jp (unsigned zone)
⏱️ Timing
Total: 915ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 219.94.155.217 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | first-1.jp (pri: 10) |
| TXT | 2 | google-site-verification=Lt6Re9sfin5T9aJ, v=spf1 a:www427b.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.dns.ne.jp, ns2.dns.ne.jp)
Analysis
Mail Server Role
first-1.jp serves as the mail server for first-1.jp.
IP Addresses
first-1.jp points to an IP address: 219.94.155.217.
other host names include nastokyo.co.jp, farobotsier.com, www.abc-de.com, pc-spec.info and www427b.sakura.ne.jp; they share IP numbers with first-1.jp.
Name Servers
first-1.jp is delegated to three name servers master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
first-1.jp at least partially shares name servers with other domains, for instance chirashi.ne.jp, daiyuuzan.or.jp, neko-tomo.net, tmt.or.jp and kyosi-n.com.
These name servers are commonly used alongside dns.sakura.ad.jp.
Host names with one IP:
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
first-1.jp is handled by a single mail server.
The host name first-1.jp points to IP 219.94.155.217.