work-dev.net - robtex.com
work-dev.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 133.242.249.220🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| PTR | www4280.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 | work-dev.net ⭐ | ||||||
| A | 133.242.249.220🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| PTR | www4280.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www4280.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2026-03-19 #24 | ||||||
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=1794315606 | ||||||
MX for
work-dev.net |
Same first word
Similar names
edv-work.de |
dev-work.tokyo |
dev-work.ru |
dev-work.ph |
dev-work.synology.me |
dev-work.workers.dev |
dev-work.ro |
dev-work.info |
dev-work.me |
dev-work.co.uk |
dev-work.de |
dev-work.pl |
dev-work.net |
dev-work.com |
Previous names
Next names
DNS History
5 records (5 active, 0 former)
●MXwork-dev.net2026-08-28 → 2026-11-10 · 2 obs
● 2026-11-10 13:02:22
●A133.242.249.2202026-08-28 → 2026-11-10 · 2 obs
● 2026-11-10 13:02:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | m.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net... | - |
| work-dev.net | 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 work-dev.net (unsigned zone)
⏱️ Timing
Total: 1339ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 133.242.249.220 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | work-dev.net (pri: 10) |
| TXT | 1 | v=spf1 a:www4280.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Mail Server Role
work-dev.net handles its own mail, functioning as its own mail server.
IP Addresses
work-dev.net resolves to just one IP address, 133.242.249.220.
Two other host names, along with yodakenchiku.com, miura-snet.com and latteria.jp, also share IP numbers with work-dev.net.
Name Servers
work-dev.net carries NS records delegating to master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
work-dev.net has at least partial name server overlap with other domains, such as hyogo-dai-nagomi.jp, eighatt.com, raise-sr.com and two others.
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 — each hostname maps to exactly one IP address.
Mail Servers
work-dev.net is served by just one mail server: work-dev.net.
work-dev.net carries a single IP number, which is 133.242.249.220.