prolog.co.jp - robtex.com
prolog.co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 180.43.188.154🇯🇵 OCN180.0.0.0/10 (AS4713) CIDR BLOCK 89 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN | ||||||
| NS | asns1.customer.ne.jp ⭐ | ||||||
| A | 210.150.254.86🇯🇵 InfoSphere210.150.0.0/16 INFOSPHERE | ||||||
| PTR | asns1.customer.ne.jp | ||||||
| NS | asns2.customer.ne.jp | ||||||
| A | 210.150.254.94🇯🇵 InfoSphere210.150.0.0/16 INFOSPHERE | ||||||
| PTR | asns2.customer.ne.jp | ||||||
| MX | v0902-137.mailsecure.jp ⭐ | ||||||
| A | 211.2.164.137🇯🇵 InfoSphere211.2.160.0/20 INFOSPHERE | ||||||
| PTR | v0902-137.mailsecure.jp | ||||||
| TXT | v=spf1 include:fmx.etius.jp +ip4:211.2.164.137/32 +ip4:180.43.188.152/29 -all | ||||||
| TXT | 211.2.164.137/32 | ||||||
| SOA | asns1.customer.ne.jpihara@prolog.co.jp serial=1629417385 | ||||||
co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| TXT | co.jp. | ||||||
Same first word
Similar names
DNS History
7 records (4 active, 3 former)
●NSasns1.customer.ne.jp2026-04-18 → 2026-05-11 · 3 obs
● 2026-04-18 20:35:42
● 2026-05-11 18:38:34
●NSasns2.customer.ne.jp2026-04-18 → 2026-05-11 · 3 obs
● 2026-04-18 20:35:42
● 2026-05-11 18:38:34
○NSns-tk061.ocn.ad.jp2015-08-11 → 2018-07-06 · 4 obs
● 2018-07-06 13:13:24
○ 2026-04-18 20:35:42
○ 2026-05-11 18:38:34
○NSns.prolog.co.jp2015-08-11 → 2018-07-06 · 4 obs
● 2018-07-06 13:13:24
○ 2026-04-18 20:35:42
○ 2026-05-11 18:38:34
○MXns.prolog.co.jp2015-08-11 → 2018-07-06 · 4 obs
● 2018-07-06 13:13:24
○ 2026-04-18 20:35:42
○ 2026-05-11 18:38:34
●MXv0902-137.mailsecure.jp2026-04-18 → 2026-05-11 · 3 obs
● 2026-04-18 20:35:42
● 2026-05-11 18:38:34
●A180.43.188.1542015-08-11 → 2026-05-11 · 2 obs
● 2026-05-11 18:38:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| prolog.co.jp | asns1.customer.ne.jp, asns2.customer.ne.jp | - |
✅ Authoritative Response
Server:210.150.254.94
NS records: asns1.customer.ne.jp, asns2.customer.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for prolog.co.jp (unsigned zone)
⏱️ Timing
Total: 1780ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 180.43.188.154 |
| NS | 2 | asns2.customer.ne.jp, asns1.customer.ne.jp |
| MX | 1 | v0902-137.mailsecure.jp (pri: 10) |
| TXT | 2 | v=spf1 include:fmx.etius.jp +ip4:211.2.1, 211.2.164.137/32 |
| SOA | 1 | asns1.customer.ne.jp ihara.prolog.co.jp |
Analysis
IP Addresses
prolog.co.jp points to a single IP: 180.43.188.154.
Name Servers
prolog.co.jp's delegation is to two name servers asns1.customer.ne.jp and asns2.customer.ne.jp.
prolog.co.jp shares the same name server configuration as other domains, such as v1202-058.mailsecure.jp, taiko-denki.co.jp, v3100-018.mailsecure.jp, koiwabond.com and nidomresort.jp.
prolog.co.jp shares name servers with other domains at least partially, for instance idcltd.co.jp, it-secure.jp and aegs.co.jp.
Host names with a single IP:
asns1.customer.ne.jp resolves to 210.150.254.86.
asns2.customer.ne.jp resolves to 210.150.254.94.
Mail Servers
prolog.co.jp is served by a single mail server, v0902-137.mailsecure.jp.
prolog.co.jp shares the same mail server setup as other domains, for instance v0902-137.mailsecure.jp.
v0902-137.mailsecure.jp points to IP number 211.2.164.137.