`a-commu.jp`

DNSSEC	⚠️ Not signed
A	202.172.25.45^{🇯🇵 DRNET202.172.24.0/21}
		PTR	`b44.coreserver.jp`
NS	`ns1.value-domain.com` ⭐
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.52.161^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.value-domain.com`
		A	172.64.53.3^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.53.115^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns3.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.52.161^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns4.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.53.3^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.53.115^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns5.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.52.161^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`a-commu.jp` ⭐
		A	202.172.25.45^{🇯🇵 DRNET202.172.24.0/21}
			PTR	`b44.coreserver.jp`
TXT	`v=spf1 ip4:202.172.25.45 ~all`
SOA	`ns1.value-domain.com`hostmaster@a-commu.jp 2020-08-26 #20

`jp`

	DNSSEC	🔒 Signed (DS record present)
	NS	`z.dns.jp` ⭐
	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.jp`root@dns.jp serial=1778374802

MX for

a-commu.jp

Same first word

a-commu.jp

DNS History

7 records (7 active, 0 former)

●NSns1.value-domain.com2026-03-31 → 2026-05-10 · 2 obs

● 2026-03-31 20:51:20
● 2026-05-10 01:05:54

●NSns2.value-domain.com2026-03-31 → 2026-05-10 · 2 obs

● 2026-03-31 20:51:20
● 2026-05-10 01:05:54

●NSns3.value-domain.com2026-03-31 → 2026-05-10 · 2 obs

● 2026-03-31 20:51:20
● 2026-05-10 01:05:54

●NSns4.value-domain.com2026-03-31 → 2026-05-10 · 2 obs

● 2026-03-31 20:51:20
● 2026-05-10 01:05:54

●NSns5.value-domain.com2026-03-31 → 2026-05-10 · 2 obs

● 2026-03-31 20:51:20
● 2026-05-10 01:05:54

●MXa-commu.jp2026-03-31 → 2026-05-10 · 2 obs

● 2026-03-31 20:51:20
● 2026-05-10 01:05:54

●A202.172.25.452026-03-31 → 2026-05-10 · 2 obs

● 2026-03-31 20:51:20
● 2026-05-10 01:05:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
a-commu.jp	ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com...	-

✅ Authoritative Response

Server:172.64.53.3

NS records: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com, ns5.value-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for a-commu.jp (unsigned zone)

⏱️ Timing

Total: 1253ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`202.172.25.45`
NS	2	`ns1.value-domain.com, ns2.value-domain.com`
MX	1	`a-commu.jp (pri: 10)`
TXT	1	`v=spf1 ip4:202.172.25.45 ~all`
SOA	1	`ns1.value-domain.com hostmaster.a-commu.`

Analysis

Mail Server Role

The mail server for a-commu.jp is a-commu.jp.

IP Addresses

a-commu.jp points to a single IP address: 202.172.25.45.

Other host names such as mail.jahbs.info, e87class.jp, zeninavi.net, b44.coreserver.jp and hibiyamusicfes.jp share IPs with a-commu.jp.

Name Servers

a-commu.jp is delegated to five name servers: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com and ns5.value-domain.com.

a-commu.jp at least partially shares name servers with other domains, for example saw2.net, eltube.net, pcwater.net, er-data.com and aleister.jp.