core-mma.jp - robtex.com

core-mma.jp

DNSSEC⚠️ Not signed
A202.226.39.110🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRsv209.xserver.jp
NSns1.xserver.jp
A202.226.36.164🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
A202.226.36.170🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
A202.226.36.246🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns1.xserver.jp
NSns2.xserver.jp
A35.72.43.26🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix
PTRns2.xserver.jp
NSns3.xserver.jp
A202.226.36.247🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns3.xserver.jp
NSns4.xserver.jp
A183.90.224.226🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.
A183.90.224.230🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.
A202.226.39.247🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns4.xserver.jp
NSns5.xserver.jp
A157.112.182.218🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.
A157.112.182.220🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.
A202.226.37.247🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns5.xserver.jp
MXcore-mma.jp
A202.226.39.110🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRsv209.xserver.jp
TXTv=spf1 +a:sv209.xserver.jp +a:core-mma.jp +mx include:spf.sender.xserver.jp ~all
SOAns1.xserver.jproot@xserver.jp serial=0

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=1785716102

MX for

Same first word

Similar names

DNS History

7 records (7 active, 0 former)

NSns1.xserver.jpns2.xserver.jpns3.xserver.jpns4.xserver.jpns5.xserver.jpMXcore-mma.jpA202.226.39.110
NSns1.xserver.jp2026-06-07 → 2026-08-03 · 2 obs
● 2026-06-07 19:44:06
● 2026-08-03 00:42:34
NSns2.xserver.jp2026-06-07 → 2026-08-03 · 2 obs
● 2026-06-07 19:44:06
● 2026-08-03 00:42:34
NSns3.xserver.jp2026-06-07 → 2026-08-03 · 2 obs
● 2026-06-07 19:44:06
● 2026-08-03 00:42:34
NSns4.xserver.jp2026-06-07 → 2026-08-03 · 2 obs
● 2026-06-07 19:44:06
● 2026-08-03 00:42:34
NSns5.xserver.jp2026-06-07 → 2026-08-03 · 2 obs
● 2026-06-07 19:44:06
● 2026-08-03 00:42:34
MXcore-mma.jp2026-06-07 → 2026-08-03 · 2 obs
● 2026-06-07 19:44:06
● 2026-08-03 00:42:34
A202.226.39.1102026-06-07 → 2026-08-03 · 2 obs
● 2026-06-07 19:44:06
● 2026-08-03 00:42:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpe.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp...-
core-mma.jpns4.xserver.jp, ns5.xserver.jp, ns1.xserver.jp, ns2.xserver.jp...11 records

✅ Authoritative Response

Server:157.112.182.220

NS records: ns4.xserver.jp, ns5.xserver.jp, ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for core-mma.jp (unsigned zone)

⏱️ Timing

Total: 740ms | Queries: -

📄 Records

TypeCountSample Data
A1202.226.39.110
NS5ns3.xserver.jp, ns1.xserver.jp...
MX1core-mma.jp (pri: 0)
TXT1v=spf1 +a:sv209.xserver.jp +a:core-mma.j
SOA1ns1.xserver.jp root.xserver.jp

📌 Glue Records Collected

Total: 11

Out-of-bailiwick: 11 (ns1.xserver.jp, ns1.xserver.jp, ns1.xserver.jp...)

Analysis

Mail Server Role

The MX record for core-mma.jp points back to core-mma.jp — it is its own mail server.

IP Addresses

core-mma.jp directs to one IP number, which is 202.226.39.110.

Among the host names that share IP numbers with core-mma.jp are sv209.xserver.jp, xn--eckk5g5byczcn5kr016aylav78e.com, macoos.biz and two others.

Name Servers

The authoritative name servers for core-mma.jp are ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.

There is at least partial name server overlap between core-mma.jp and other domains — astro-prepare.com, hosaka-dental.com, jitan-navi.com and two more among them.

These name servers frequently co-occur with the name servers ns4.xserver.jp and ns5.xserver.jp.

Hosts with three IP address records:

ns1.xserver.jp points to 202.226.36.164, 202.226.36.170 and 202.226.36.246.

ns4.xserver.jp points to 183.90.224.226, 183.90.224.230 and 202.226.39.247.

ns5.xserver.jp points to 157.112.182.218, 157.112.182.220 and 202.226.37.247.

Hosts that resolve to one IP address:

ns2.xserver.jp points to 35.72.43.26.

ns3.xserver.jp points to 202.226.36.247.

Mail Servers

The MX record for core-mma.jp points to a single mail server: core-mma.jp.

core-mma.jp resolves to a single IP number: 202.226.39.110.