rfree.jp - robtex.com
rfree.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 150.95.48.43🇯🇵 GMO-INTERNET150.95.32.0/19 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | v150-95-48-43.a009.g.jpt1.static.cnode.io | ||||||
| NS | 01.dnsv.jp ⭐ | ||||||
| A | 2400:8500:3300::53🇯🇵 GMO-DNS2400:8500:3300::/48 GMO Internet,inc. | ||||||
| PTR | 01.dnsv.jp | ||||||
| A | 157.7.32.53🇯🇵 GMO-DNS157.7.32.0/24 GMO Internet,inc. Network-Team. | ||||||
| PTR | 01.dnsv.jp | ||||||
| NS | 02.dnsv.jp | ||||||
| A | 157.7.33.53🇯🇵 GMO-DNS157.7.33.0/24 GMO Internet,inc. Network-Team. | ||||||
| PTR | 02.dnsv.jp | ||||||
| NS | 03.dnsv.jp | ||||||
| A | 2400:8500:3000::53🇯🇵 GMO-DNS2400:8500:3000::/48 GMO Internet,inc. | ||||||
| PTR | 03.dnsv.jp | ||||||
| A | 157.7.34.53🇯🇵 GMO-DNS157.7.34.0/24 GMO Internet,inc. Network-Team. | ||||||
| PTR | 03.dnsv.jp | ||||||
| NS | 04.dnsv.jp | ||||||
| A | 2400:8500:3fff::53🇯🇵 GMO-DNS2400:8500:3fff::/48 GMO Internet,inc. | ||||||
| PTR | 04.dnsv.jp | ||||||
| A | 157.7.35.53🇯🇵 GMO-DNS157.7.35.0/24 GMO Internet,inc. Network-Team. | ||||||
| PTR | 04.dnsv.jp | ||||||
| MX | rfree.sakura.ne.jp ⭐ | ||||||
| A | 163.43.102.17🇯🇵 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 | www3807.sakura.ne.jp | ||||||
| SOA | 01.dnsv.jphostmaster@dnsv.jp serial=1542267143 | ||||||
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=1776096003 | ||||||
Same first word
Similar names
DNS History
7 records (6 active, 1 former)
●MXrfree.sakura.ne.jp2018-08-11 → 2026-04-13 · 2 obs
● 2026-04-13 16:16:00
●A150.95.48.432026-03-26 → 2026-04-13 · 3 obs
● 2026-03-26 08:35:52
● 2026-04-13 16:16:00
○A157.7.183.1002018-08-11 → 2018-08-11 · 3 obs
○ 2026-03-26 08:35:52
○ 2026-04-13 16:16:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| rfree.jp | 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp | 7 records |
✅ Authoritative Response
Server:157.7.33.53
NS records: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rfree.jp (unsigned zone)
⏱️ Timing
Total: 866ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 150.95.48.43 |
| NS | 4 | 01.dnsv.jp, 02.dnsv.jp... |
| MX | 1 | rfree.sakura.ne.jp (pri: 10) |
| SOA | 1 | 01.dnsv.jp hostmaster.dnsv.jp |
📌 Glue Records Collected
Total: 7
Out-of-bailiwick: 7 (01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp...)
Analysis
IP Addresses
rfree.jp points to a single IP: 150.95.48.43.
Other host names, for instance v150-95-48-43.a009.g.jpt1.static.cnode.io, coral-inc.jp, miogroup.jp, enshop.jp and azss.jp share IP numbers with rfree.jp.
Name Servers
rfree.jp's delegation is handled by four name servers: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and 04.dnsv.jp.
rfree.jp partially shares name servers with other domains; examples include 8nohe.jp, enmail.biz, jpn.tel, hmg.or.jp and nimspa.com.
Host names with two IP numbers: 01.dnsv.jp points to 2400:8500:3300::53 and 157.7.32.53; 03.dnsv.jp points to 2400:8500:3000::53 and 157.7.34.53; 04.dnsv.jp points to 2400:8500:3fff::53 and 157.7.35.53. Host names with one IP number: 02.dnsv.jp points to 157.7.33.53.
Mail Servers
rfree.jp is handled by a single mail server, rfree.sakura.ne.jp.
rfree.jp uses the same mail server setup as other domains, for example rfree.sakura.ne.jp.
rfree.sakura.ne.jp points to a single IP: 163.43.102.17.