serendplus.com - robtex.com
serendplus.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 216.230.253.74🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | webltw74.alpha-mail.jp | ||||||
| NS | kotetsu.alpha-lt.net ⭐ | ||||||
| A | 157.205.252.6🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object) | ||||||
| PTR | amdns01.alpha-mail.jp | ||||||
| NS | amdns03.alpha-mail.jp | ||||||
| A | 216.230.254.112🇺🇸 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 | 157.205.252.7🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object) | ||||||
| PTR | amdns02.alpha-mail.jp | ||||||
| MX | ampub01.alpha-mail.net ⭐ | ||||||
| A | 216.230.254.1🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| MX | ampub02.alpha-mail.net ⭐ | ||||||
| A | 216.230.254.2🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | ampub02.alpha-mail.net | ||||||
| MX | ampub03.alpha-mail.net ⭐ | ||||||
| A | 216.230.254.3🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | ampub03.alpha-mail.net | ||||||
| MX | ampub04.alpha-mail.net(50) | ||||||
| A | 216.230.254.4🇺🇸 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 2023-08-01 #8 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1783824632 | ||||||
Same first word
serendplus.com |
DNS History
9 records (8 active, 1 former)
●NSamdns03.alpha-mail.jp2026-02-25 → 2026-07-12 · 3 obs
● 2026-02-25 10:19:26
● 2026-07-12 03:17:02
●NSkotetsu.alpha-lt.net2018-05-07 → 2026-07-12 · 2 obs
● 2026-07-12 03:17:02
●NStsukuba.aics.ne.jp2018-05-07 → 2026-07-12 · 2 obs
● 2026-07-12 03:17:02
●MXampub01.alpha-mail.net2018-05-07 → 2026-07-12 · 2 obs
● 2026-07-12 03:17:02
●MXampub02.alpha-mail.net2018-05-07 → 2026-07-12 · 2 obs
● 2026-07-12 03:17:02
●MXampub03.alpha-mail.net2018-05-07 → 2026-07-12 · 2 obs
● 2026-07-12 03:17:02
●MXampub04.alpha-mail.net2026-02-25 → 2026-07-12 · 3 obs
● 2026-02-25 10:19:26
● 2026-07-12 03:17:02
○A216.230.250.1892018-05-07 → 2018-05-07 · 3 obs
○ 2026-02-25 10:19:26
○ 2026-07-12 03:17:02
●A216.230.253.742026-02-25 → 2026-07-12 · 3 obs
● 2026-02-25 10:19:26
● 2026-07-12 03:17:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| serendplus.com | kotetsu.alpha-lt.net, tsukuba.aics.ne.jp, amdns03.alpha-mail.jp | - |
✅ Authoritative Response
Server:216.230.254.112
NS records: kotetsu.alpha-lt.net, tsukuba.aics.ne.jp, amdns03.alpha-mail.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for serendplus.com (unsigned zone)
⏱️ Timing
Total: 1047ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.230.253.74 |
| NS | 3 | tsukuba.aics.ne.jp, kotetsu.alpha-lt.net... |
| MX | 4 | ampub01.alpha-mail.net (pri: 10), ampub04.alpha-mail.net (pri: 50)... |
| TXT | 1 | v=spf1 ip4:157.205.202.0/24 ip4:157.205. |
| SOA | 1 | kotetsu.alpha-lt.net postmaster.alpha-we |
Analysis
IP Addresses
serendplus.com resolves to just one IP address, 216.230.253.74.
Two other host names, along with sakaeyapaint.com, a(0x73686974)o.jp and nukadacpa.com, also share IP numbers with serendplus.com.
Name Servers
serendplus.com carries NS records delegating to amdns03.alpha-mail.jp, kotetsu.alpha-lt.net and tsukuba.aics.ne.jp.
At least some of serendplus.com's name servers are shared with other domains, for example one-v.co.jp, tansera.co.jp, nikkoshouji.com and two more.
amdns03.alpha-mail.jp points to 216.230.254.112; kotetsu.alpha-lt.net points to 157.205.252.6; tsukuba.aics.ne.jp points to 157.205.252.7 — each hostname maps to exactly one IP address.
Mail Servers
Mail for serendplus.com is handled by four mail servers: ampub01.alpha-mail.net, ampub02.alpha-mail.net, ampub03.alpha-mail.net and ampub04.alpha-mail.net.
There is at least a partial MX overlap between serendplus.com and other domains, including nihon-hills.co.jp, musashinoeng.co.jp, maeda-ind.co.jp and two others.
The hosts ampub01.alpha-mail.net, ampub02.alpha-mail.net, ampub03.alpha-mail.net and ampub04.alpha-mail.net all resolve to exactly one IP address each: 216.230.254.1, 216.230.254.2, 216.230.254.3 and 216.230.254.4 respectively.