bstem.jp - dns.ninja

bstem.jp

DNSSEC⚠️ Not signed
A85.131.210.25πŸ‡―πŸ‡΅ XSERVER-AS85.131.192.0/18 XSERVER Inc.
PTRsv844.xbiz.ne.jp
NSkotetsu.alpha-lt.net ⭐
A157.205.252.6πŸ‡―πŸ‡΅ AICS157.205.0.0/16 PACNET (proxy-registered route object)
PTRamdns01.alpha-mail.jp
NSamdns03.alpha-mail.jp
A216.230.254.112πŸ‡ΊπŸ‡Έ PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US
PTRamdns03.alpha-mail.jp
NStsukuba.aics.ne.jp
A157.205.252.7πŸ‡―πŸ‡΅ AICS157.205.0.0/16 PACNET (proxy-registered route object)
PTRamdns02.alpha-mail.jp
MXampub01.alpha-mail.net ⭐
A216.230.254.1πŸ‡ΊπŸ‡Έ PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US
PTRampub01.alpha-mail.net
MXampub02.alpha-mail.net ⭐
A216.230.254.2πŸ‡ΊπŸ‡Έ PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US
MXampub03.alpha-mail.net ⭐
A216.230.254.3πŸ‡ΊπŸ‡Έ PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US
MXampub04.alpha-mail.net(50)
A216.230.254.4πŸ‡ΊπŸ‡Έ PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US
PTRampub04.alpha-mail.net
TXTv=spf1 ip4:157.205.202.0/24 ip4:157.205.203.128/25 ip4:216.230.250.0/24 ip4:2...
SOAkotetsu.alpha-lt.netpostmaster@alpha-web.ne.jp 2025-12-01 #17

jp

DNSSECπŸ”’ 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=1782081003

Same first word

Similar names

DNS History

9 records (8 active, 1 former)

20162017201820192020202120222023202420252026NSamdns03.alpha-mail.jpkotetsu.alpha-lt.nettsukuba.aics.ne.jpMXampub01.alpha-mail.netampub02.alpha-mail.netampub03.alpha-mail.netampub04.alpha-mail.netA85.131.210.25210.129.213.225
●NSamdns03.alpha-mail.jp2026-02-20 β†’ 2026-06-21 Β· 3 obs
β—‹ 2015-07-25 04:17:46
● 2026-02-20 15:28:42
● 2026-06-21 23:16:56
●NSkotetsu.alpha-lt.net2015-07-25 β†’ 2026-06-21 Β· 2 obs
● 2015-07-25 04:17:46
● 2026-06-21 23:16:56
●NStsukuba.aics.ne.jp2015-07-25 β†’ 2026-06-21 Β· 2 obs
● 2015-07-25 04:17:46
● 2026-06-21 23:16:56
●MXampub01.alpha-mail.net2015-07-25 β†’ 2026-06-21 Β· 2 obs
● 2015-07-25 04:17:46
● 2026-06-21 23:16:56
●MXampub02.alpha-mail.net2015-07-25 β†’ 2026-06-21 Β· 2 obs
● 2015-07-25 04:17:46
● 2026-06-21 23:16:56
●MXampub03.alpha-mail.net2015-07-25 β†’ 2026-06-21 Β· 2 obs
● 2015-07-25 04:17:46
● 2026-06-21 23:16:56
●MXampub04.alpha-mail.net2026-02-20 β†’ 2026-06-21 Β· 3 obs
β—‹ 2015-07-25 04:17:46
● 2026-02-20 15:28:42
● 2026-06-21 23:16:56
β—‹A210.129.213.2252015-07-25 β†’ 2018-06-01 Β· 4 obs
● 2015-07-25 04:17:46
● 2018-06-01 08:34:48
β—‹ 2026-02-20 15:28:42
β—‹ 2026-06-21 23:16:56
●A85.131.210.252026-02-20 β†’ 2026-06-21 Β· 3 obs
β—‹ 2018-06-01 08:34:48
● 2026-02-20 15:28:42
● 2026-06-21 23:16:56

πŸ” DNS Trace

πŸ“‹ Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
bstem.jpamdns03.alpha-mail.jp, kotetsu.alpha-lt.net, tsukuba.aics.ne.jp1 record

βœ… Authoritative Response

Server:157.205.252.6

NS records: amdns03.alpha-mail.jp, kotetsu.alpha-lt.net, tsukuba.aics.ne.jp

πŸ”’ DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bstem.jp (unsigned zone)

⏱️ Timing

Total: 2096ms | Queries: -

πŸ“„ Records

TypeCountSample Data
A185.131.210.25
NS3amdns03.alpha-mail.jp, tsukuba.aics.ne.jp...
MX4ampub03.alpha-mail.net (pri: 10), ampub01.alpha-mail.net (pri: 10)...
TXT1v=spf1 ip4:157.205.202.0/24 ip4:157.205.
SOA1kotetsu.alpha-lt.net postmaster.alpha-we

πŸ“Œ Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (amdns03.alpha-mail.jp)

Analysis

IP Addresses

bstem.jp directs to one IP number, which is 85.131.210.25.

Among the host names that share IP numbers with bstem.jp are kagla.jp, bbm-a.jp, ishii-kouki.co.jp and two others.

Name Servers

The authoritative name servers for bstem.jp are amdns03.alpha-mail.jp, kotetsu.alpha-lt.net and tsukuba.aics.ne.jp β€” three in total.

bstem.jp has at least partial name server overlap with other domains, such as f-jikuuke.co.jp, src-inc.jp, cafi.jp and two others.

The hostnames amdns03.alpha-mail.jp, kotetsu.alpha-lt.net and tsukuba.aics.ne.jp each resolve to a single IP: amdns03.alpha-mail.jp β†’ 216.230.254.112, kotetsu.alpha-lt.net β†’ 157.205.252.6, tsukuba.aics.ne.jp β†’ 157.205.252.7.

Mail Servers

Four mail servers handle email for bstem.jp: ampub01.alpha-mail.net, ampub02.alpha-mail.net, ampub03.alpha-mail.net and ampub04.alpha-mail.net.

bstem.jp shares at least some of its mail servers with other domains β€” for example sobue-gh.or.jp, sunrisecom.co.jp, mori-shoji.com and two more.

ampub01.alpha-mail.net resolves to 216.230.254.1. ampub02.alpha-mail.net resolves to 216.230.254.2. ampub03.alpha-mail.net resolves to 216.230.254.3. ampub04.alpha-mail.net resolves to 216.230.254.4. All four hosts carry exactly one IP address.