`mail01b.tama-e.com`

	DNSSEC	⚠️ Not signed
	A	153.231.237.124^{🇯🇵 OCN153.224.0.0/12 (AS4713) CIDR BLOCK 97 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}

`tama-e.com`

	DNSSEC	⚠️ Not signed
	NS	`god.ntcl.jp` ⚠️ Not in zone NS records
	NS	`god.tama-e.com` ⚠️ Not in parent delegation
	NS	`ns-tk022.ocn.ad.jp` ⚠️ Not in zone NS records

MX for

tama-e.com

DNS History

2 records (1 active, 1 former)

○A153.150.73.1482015-07-07 → 2016-12-24 · 4 obs

● 2015-07-07 12:28:48
● 2016-12-24 15:24:28
○ 2026-04-23 02:54:56
○ 2026-08-07 18:09:44

●A153.231.237.1242026-04-23 → 2026-08-07 · 18 obs

○ 2016-12-24 15:24:28
● 2026-04-23 02:54:56
○ 2026-04-28 03:05:24
○ 2026-05-03 20:28:32
● 2026-05-05 19:16:16
● 2026-05-07 09:05:20
○ 2026-05-07 11:02:56
○ 2026-05-11 16:59:48
● 2026-05-14 06:27:32
○ 2026-05-14 09:45:34
○ 2026-05-17 08:16:58
● 2026-05-26 18:41:02
● 2026-05-28 22:50:30
○ 2026-06-03 02:00:48
● 2026-06-22 19:27:14
○ 2026-07-10 03:18:18
● 2026-08-07 18:09:42
● 2026-08-07 18:09:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, j.gtld-servers.net, a.gtld-servers.net, h.gtld-servers.net...	-
tama-e.com	ns-tk022.ocn.ad.jp, god.ntcl.jp	-

✅ Authoritative Response

Server:203.139.160.104

NS records: ns-tk022.ocn.ad.jp, god.ntcl.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tama-e.com (unsigned zone)

⏱️ Timing

Total: 1105ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`153.231.237.124`

Analysis

Mail Server Role

The mail server mail01b.tama-e.com processes email for tama-e.com.

mail01.tama-e.com routinely functions as a mail server together with mail01b.tama-e.com.

IP Addresses

mail01b.tama-e.com resolves to just one IP address, 153.231.237.124.

Further host names like mail01b.ntcl.co.jp and mail01b.ntcl.jp overlap in IP numbers with mail01b.tama-e.com.

mail01b.tama-e.com - robtex.com