isrf.jp - robtex.com
isrf.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 54.199.215.28🇯🇵 Amazon54.199.128.0/17 EC2 NRT Prefix | ||||||
| PTR | ec2-54-199-215-28.ap-northeast-1.compute.amazonaws.com | ||||||
| NS | ns.dynax.co.jp ⭐ | ||||||
| A | 221.112.111.133🇯🇵 UCOM221.112.0.0/16 ARTERIA Networks Corporation(UCOM) | ||||||
| NS | dns.dynax.co.jp | ||||||
| A | 52.193.193.154🇯🇵 Amazon52.192.0.0/15 EC2 NRT prefix | ||||||
| PTR | dns.dynax.co.jp | ||||||
| MX | chk.cococica.com ⭐ | ||||||
| A | 221.112.111.139🇯🇵 UCOM221.112.0.0/16 ARTERIA Networks Corporation(UCOM) | ||||||
| TXT | v=spf1 +ip4:221.112.111.128/26 ~all | ||||||
| SOA | ns.dynax.co.jppostmaster@dynax.co.jp 2014-03-31 #33 | ||||||
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=1771290902 | ||||||
Same first word
Similar names
DNS History
5 records (4 active, 1 former)
●NSdns.dynax.co.jp2015-09-04 → 2026-03-13 · 2 obs
● 2026-03-13 16:26:06
●NSns.dynax.co.jp2015-09-04 → 2026-03-13 · 2 obs
● 2026-03-13 16:26:06
●MXchk.cococica.com2015-09-04 → 2026-03-13 · 2 obs
● 2026-03-13 16:26:06
●A54.199.215.282016-04-01 → 2026-03-13 · 3 obs
● 2016-04-01 11:11:44
● 2026-03-13 16:26:06
○A61.115.205.1382015-09-04 → 2016-01-15 · 4 obs
● 2016-01-15 12:08:34
○ 2016-04-01 11:11:44
○ 2026-03-13 16:26:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, h.dns.jp, c.dns.jp, d.dns.jp... | - |
| isrf.jp | ns.dynax.co.jp, dns.dynax.co.jp | 2 records |
✅ Authoritative Response
Server: 221.112.111.133
NS records: ns.dynax.co.jp, dns.dynax.co.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for isrf.jp (unsigned zone)
⏱️ Timing
Total: 1101ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 54.199.215.28 |
| NS | 2 | dns.dynax.co.jp, ns.dynax.co.jp |
| MX | 1 | chk.cococica.com (pri: 10) |
| TXT | 1 | v=spf1 +ip4:221.112.111.128/26 ~all |
| SOA | 1 | ns.dynax.co.jp postmaster.dynax.co.jp |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (dns.dynax.co.jp, ns.dynax.co.jp)
Analysis
IP Addresses
isrf.jp points to a single IP number: 54.199.215.28.
Other host names, for instance ec2-54-199-215-28.ap-northeast-1.compute.amazonaws.com, share IP numbers with isrf.jp.
Name Servers
Delegation for isrf.jp rests with two name servers, dns.dynax.co.jp and ns.dynax.co.jp.
isrf.jp shares the same name server setup as other domains, including dekimasu.jp, kameya-net.com, nakamacloud.com, motenasjob.com and nakama.co.
isrf.jp shares name servers with other domains at least partially, for example inter-assist.co.jp.
Host names with one IP number: dns.dynax.co.jp points to 52.193.193.154; ns.dynax.co.jp points to 221.112.111.133.
Mail Servers
isrf.jp is handled by a single mail server, chk.cococica.com.
isrf.jp uses the same mail server configuration as other domains, such as tohoren-tokutaikyo.or.jp, mit-j.org, zoology.or.jp, megane.or.jp and bonyu.org.
chk.cococica.com points to a single IP: 221.112.111.139.