bstem.jp - dns.ninja
bstem.jp
| DNSSEC | β οΈ Not signed | ||||||
| A | 85.131.210.25π―π΅ XSERVER-AS85.131.192.0/18 XSERVER Inc. | ||||||
| PTR | sv844.xbiz.ne.jp | ||||||
| NS | kotetsu.alpha-lt.net β | ||||||
| A | 157.205.252.6π―π΅ AICS157.205.0.0/16 PACNET (proxy-registered route object) | ||||||
| PTR | amdns01.alpha-mail.jp | ||||||
| NS | amdns03.alpha-mail.jp | ||||||
| A | 216.230.254.112πΊπΈ PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | amdns03.alpha-mail.jp | ||||||
| NS | tsukuba.aics.ne.jp | ||||||
| A | 157.205.252.7π―π΅ AICS157.205.0.0/16 PACNET (proxy-registered route object) | ||||||
| PTR | amdns02.alpha-mail.jp | ||||||
| MX | ampub01.alpha-mail.net β | ||||||
| A | 216.230.254.1πΊπΈ PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | ampub01.alpha-mail.net | ||||||
| MX | ampub02.alpha-mail.net β | ||||||
| A | 216.230.254.2πΊπΈ PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| MX | ampub03.alpha-mail.net β | ||||||
| A | 216.230.254.3πΊπΈ PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| MX | ampub04.alpha-mail.net(50) | ||||||
| A | 216.230.254.4πΊπΈ PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | ampub04.alpha-mail.net | ||||||
| TXT | v=spf1 ip4:157.205.202.0/24 ip4:157.205.203.128/25 ip4:216.230.250.0/24 ip4:2... | ||||||
| SOA | kotetsu.alpha-lt.netpostmaster@alpha-web.ne.jp 2025-12-01 #17 | ||||||
jp
| DNSSEC | π Signed (DS record present) | ||||||
| NS | z.dns.jp β | ||||||
| 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=1782081003 | ||||||
Same first word
Similar names
DNS History
9 records (8 active, 1 former)
βNSamdns03.alpha-mail.jp2026-02-20 β 2026-06-21 Β· 3 obs
β 2026-02-20 15:28:42
β 2026-06-21 23:16:56
βNSkotetsu.alpha-lt.net2015-07-25 β 2026-06-21 Β· 2 obs
β 2026-06-21 23:16:56
βNStsukuba.aics.ne.jp2015-07-25 β 2026-06-21 Β· 2 obs
β 2026-06-21 23:16:56
βMXampub01.alpha-mail.net2015-07-25 β 2026-06-21 Β· 2 obs
β 2026-06-21 23:16:56
βMXampub02.alpha-mail.net2015-07-25 β 2026-06-21 Β· 2 obs
β 2026-06-21 23:16:56
βMXampub03.alpha-mail.net2015-07-25 β 2026-06-21 Β· 2 obs
β 2026-06-21 23:16:56
βMXampub04.alpha-mail.net2026-02-20 β 2026-06-21 Β· 3 obs
β 2026-02-20 15:28:42
β 2026-06-21 23:16:56
βA210.129.213.2252015-07-25 β 2018-06-01 Β· 4 obs
β 2018-06-01 08:34:48
β 2026-02-20 15:28:42
β 2026-06-21 23:16:56
βA85.131.210.252026-02-20 β 2026-06-21 Β· 3 obs
β 2026-02-20 15:28:42
β 2026-06-21 23:16:56
π DNS Trace
π Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| bstem.jp | amdns03.alpha-mail.jp, kotetsu.alpha-lt.net, tsukuba.aics.ne.jp | 1 record |
β Authoritative Response
Server:157.205.252.6
NS records: amdns03.alpha-mail.jp, kotetsu.alpha-lt.net, tsukuba.aics.ne.jp
π DNSSEC Status
β οΈ Insecure (no DNSSEC)
No DS record for bstem.jp (unsigned zone)
β±οΈ Timing
Total: 2096ms | Queries: -
π Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 85.131.210.25 |
| NS | 3 | amdns03.alpha-mail.jp, tsukuba.aics.ne.jp... |
| MX | 4 | ampub03.alpha-mail.net (pri: 10), ampub01.alpha-mail.net (pri: 10)... |
| TXT | 1 | v=spf1 ip4:157.205.202.0/24 ip4:157.205. |
| SOA | 1 | kotetsu.alpha-lt.net postmaster.alpha-we |
π 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.