four-b.jp - robtex.com

four-b.jp

DNSSEC⚠️ Not signed
A49.212.235.110🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww3400.sakura.ne.jp
NS01.dnsv.jp ⭐
A2400:8500:3300::53🇯🇵 GMO-DNS2400:8500:3300::/48 GMO Internet,inc.
PTR01.dnsv.jp
A157.7.32.53🇯🇵 GMO-DNS157.7.32.0/24 GMO Internet,inc. Network-Team.
PTR01.dnsv.jp
NS02.dnsv.jp
A157.7.33.53🇯🇵 GMO-DNS157.7.33.0/24 GMO Internet,inc. Network-Team.
PTR02.dnsv.jp
NS03.dnsv.jp ⚠️ Not in parent delegation
A2400:8500:3000::53🇯🇵 GMO-DNS2400:8500:3000::/48 GMO Internet,inc.
PTR03.dnsv.jp
A157.7.34.53🇯🇵 GMO-DNS157.7.34.0/24 GMO Internet,inc. Network-Team.
PTR03.dnsv.jp
NS04.dnsv.jp ⚠️ Not in parent delegation
A2400:8500:3fff::53🇯🇵 GMO-DNS2400:8500:3fff::/48 GMO Internet,inc.
PTR04.dnsv.jp
A157.7.35.53🇯🇵 GMO-DNS157.7.35.0/24 GMO Internet,inc. Network-Team.
PTR04.dnsv.jp
MXmail06.jumbo.co.jp ⭐
A116.80.119.91🇯🇵 InfoSphere116.80.0.0/16 INFOSPHERE
PTRmail06.jumbo.co.jp
TXT v=spf1 a mx a:49.212.235.110 ip4:140.227.151.92 ip4: 116.80.119.91 ip4: 210....
SOA01.dnsv.jphostmaster@dnsv.jp serial=1768381213

jp

DNSSEC🔒 Signed (DS record present)
NSz.dns.jp ⭐
NSa.dns.jp
NSb.dns.jp
NSc.dns.jp
NSd.dns.jp
NSe.dns.jp
NSf.dns.jp
NSg.dns.jp
NSh.dns.jp
SOAz.dns.jproot@dns.jp serial=1785780003

Subdomains

www.four-b.jp

Same first word

four-b.de
four-b.jp

Similar names

b-four.nl

DNS History

9 records (6 active, 3 former)

20162017201820192020202120222023202420252026NS01.dnsv.jp02.dnsv.jp03.dnsv.jp04.dnsv.jpMXmail06.jumbo.co.jpmail03.jumbo.co.jpA49.212.235.110202.210.171.196202.210.171.209
●NS01.dnsv.jp2015-08-04 → 2026-08-03 · 2 obs
● 2015-08-04 21:11:40
● 2026-08-03 19:14:02
●NS02.dnsv.jp2015-08-04 → 2026-08-03 · 2 obs
● 2015-08-04 21:11:40
● 2026-08-03 19:14:02
●NS03.dnsv.jp2015-08-04 → 2026-08-03 · 2 obs
● 2015-08-04 21:11:40
● 2026-08-03 19:14:02
●NS04.dnsv.jp2015-08-04 → 2026-08-03 · 2 obs
● 2015-08-04 21:11:40
● 2026-08-03 19:14:02
○MXmail03.jumbo.co.jp2015-08-04 → 2018-10-24 · 4 obs
● 2015-08-04 21:11:40
● 2018-10-24 19:11:58
○ 2026-02-15 14:13:30
○ 2026-08-03 19:14:02
●MXmail06.jumbo.co.jp2026-02-15 → 2026-08-03 · 3 obs
○ 2018-10-24 19:11:58
● 2026-02-15 14:13:30
● 2026-08-03 19:14:02
○A202.210.171.1962018-10-24 → 2018-10-24 · 4 obs
○ 2017-02-18 16:49:04
● 2018-10-24 19:11:58
○ 2026-02-15 14:13:30
○ 2026-08-03 19:14:02
○A202.210.171.2092015-08-04 → 2017-02-18 · 4 obs
● 2015-08-04 21:11:40
● 2017-02-18 16:49:04
○ 2018-10-24 19:11:58
○ 2026-08-03 19:14:02
●A49.212.235.1102026-02-15 → 2026-08-03 · 3 obs
○ 2018-10-24 19:11:58
● 2026-02-15 14:13:30
● 2026-08-03 19:14:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpe.dns.jp, g.dns.jp, a.dns.jp, b.dns.jp...-
four-b.jp01.dnsv.jp, 02.dnsv.jp3 records

✅ Authoritative Response

Server:157.7.33.53

NS records: 01.dnsv.jp, 02.dnsv.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for four-b.jp (unsigned zone)

⏱️ Timing

Total: 1078ms | Queries: -

📄 Records

TypeCountSample Data
A149.212.235.110
NS401.dnsv.jp, 02.dnsv.jp...
MX1mail06.jumbo.co.jp (pri: 10)
TXT1 v=spf1 a mx a:49.212.235.110 ip4:140.22
SOA101.dnsv.jp hostmaster.dnsv.jp

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (01.dnsv.jp, 02.dnsv.jp, 01.dnsv.jp)

Analysis

Hierarchy

www.four-b.jp is a subdomain of four-b.jp.

IP Addresses

four-b.jp directs to one IP number, which is 49.212.235.110.

Among the host names that share IP numbers with four-b.jp are japankakushin.sakura.ne.jp, sakurano-dept.jp, spacealpha.jp and two others.

Name Servers

The domain four-b.jp is delegated to these four name servers: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and 04.dnsv.jp.

The name servers of four-b.jp overlap at least partially with those of other domains — among them mapro.co.jp, kouyahikosaka.com, jpn-ga.jp and two more.

Hosts with two IP numbers each:

01.dnsv.jp has two IP addresses: 157.7.32.53 and 2400:8500:3300::53.

03.dnsv.jp has two IP addresses: 157.7.34.53 and 2400:8500:3000::53.

04.dnsv.jp has two IP addresses: 157.7.35.53 and 2400:8500:3fff::53.

Hosts that resolve to one IP address:

02.dnsv.jp directs to 157.7.33.53.

Mail Servers

four-b.jp routes its mail through a single mail server, mail06.jumbo.co.jp.

four-b.jp and domains like jumbo.co.jp share an identical mail server configuration.

mail06.jumbo.co.jp has exactly one IP number: 116.80.119.91.