a-class.co.jp - robtex.com
a-class.co.jp
co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| TXT | co.jp. | ||||||
Same first word
a-class.co.jp |
a-class.at |
a-class.co.uk |
a-class.com.ua |
a-class.com.au |
a-class.dk |
a-class.co |
a-class.by |
a-class.jp |
a-class.biz |
a-class.com |
Similar names
DNS History
11 records (7 active, 4 former)
●NS01.dnsv.jp2026-03-07 → 2026-03-27 · 3 obs
● 2026-03-07 15:16:54
● 2026-03-27 15:18:10
●NS02.dnsv.jp2026-03-07 → 2026-03-27 · 3 obs
● 2026-03-07 15:16:54
● 2026-03-27 15:18:10
●NS03.dnsv.jp2026-03-07 → 2026-03-27 · 3 obs
● 2026-03-07 15:16:54
● 2026-03-27 15:18:10
●NS04.dnsv.jp2026-03-07 → 2026-03-27 · 3 obs
● 2026-03-07 15:16:54
● 2026-03-27 15:18:10
○NSns.makeshop.jp2015-06-17 → 2017-01-07 · 4 obs
● 2017-01-07 19:39:08
○ 2026-03-07 15:16:54
○ 2026-03-27 15:18:10
○NSns2.makeshop.jp2015-06-17 → 2017-01-07 · 4 obs
● 2017-01-07 19:39:08
○ 2026-03-07 15:16:54
○ 2026-03-27 15:18:10
○MXmail.a-class.co.jp2015-06-17 → 2017-01-07 · 4 obs
● 2017-01-07 19:39:08
○ 2026-03-07 15:16:54
○ 2026-03-27 15:18:10
●MXsmtp.google.com2026-03-07 → 2026-03-27 · 3 obs
● 2026-03-07 15:16:54
● 2026-03-27 15:18:10
○A157.7.183.1322015-06-17 → 2017-01-07 · 4 obs
● 2017-01-07 19:39:08
○ 2026-03-07 15:16:54
○ 2026-03-27 15:18:10
●A18.177.186.862026-03-07 → 2026-03-27 · 3 obs
● 2026-03-07 15:16:54
● 2026-03-27 15:18:10
●A35.77.238.2402026-03-07 → 2026-03-27 · 3 obs
● 2026-03-07 15:16:54
● 2026-03-27 15:18:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| a-class.co.jp | 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp | 7 records |
✅ Authoritative Response
Server:157.7.35.53
NS records: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for a-class.co.jp (unsigned zone)
⏱️ Timing
Total: 982ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 18.177.186.86, 35.77.238.240 |
| NS | 4 | 01.dnsv.jp, 02.dnsv.jp... |
| MX | 1 | smtp.google.com (pri: 1) |
| TXT | 2 | google-site-verification=71ZOx_9ihAbyH8Y, v=spf1 include:_spf.google.com include:s |
| 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
a-class.co.jp resolves to two IP numbers: 18.177.186.86 and 35.77.238.240.
Other host names, for instance iro-shop.com, housouichiba.com, candles.jp, onoden.co.jp and pacina.co.jp share IP numbers with a-class.co.jp.
Name Servers
a-class.co.jp's delegation is handled by four name servers: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and 04.dnsv.jp.
a-class.co.jp partially shares name servers with other domains; examples include 098oroku.com, xn--cck7bif2jrb1evdd.com, simasiro.com, e-ams.net and hokkaido-style.jp.
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
a-class.co.jp is handled by a single mail server, smtp.google.com.
a-class.co.jp has the same mail server setup as other domains, including texaspanhellenic.com, aesir.ro, headstreaminc.com, oscaro-power.com and webanekdot.ru.
a-class.co.jp shares some mail servers with other domains, at least partially, such as monarcfilo.com, cosmowhiz.com, shoosh.co.za, takemore.photos and desertvapors.com.
these mail servers are commonly used with aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.
Host smtp.google.com resolves to four IP numbers: 2a00:1450:4009:c0f::1a, 2a00:1450:4009:c0f::1b, 192.178.223.26 and 192.178.223.27.