`mail.1up.co.jp`

DNSSEC	⚠️ Not signed
A	219.99.172.186^{🇯🇵 FUTURE219.99.168.0/21 FS CIDR BLOCK ORIGIN-AS23824-interim}
		PTR	`svs17.dsbsv.net`

`1up.co.jp`

	DNSSEC	⚠️ Not signed
	A	219.99.172.186^{🇯🇵 FUTURE219.99.168.0/21 FS CIDR BLOCK ORIGIN-AS23824-interim}
	NS	`manage.asp-frontier.net` ⭐
	NS	`dns1.asp-frontier.net`
	NS	`dns2.asp-frontier.net`
	NS	`dns3.asp-frontier.net`
	MX	`mail.1up.co.jp` ⭐
	TXT	`v=spf1 include:spfgw.fsi.ne.jp ~all`
	SOA	`manage.asp-frontier.net`root@manage.asp-frontier.net 2022-08-25 #2

MX for

1up.co.jp

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DNS History

1 record (1 active, 0 former)

●A219.99.172.1862026-04-18 → 2026-05-08 · 2 obs

● 2026-04-18 18:35:58
● 2026-05-08 15:45:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	f.dns.jp, b.dns.jp, a.dns.jp, d.dns.jp...	-
1up.co.jp	dns3.asp-frontier.net, dns2.asp-frontier.net, dns1.asp-frontier.net	-

✅ Authoritative Response

Server:219.99.172.38

NS records: dns3.asp-frontier.net, dns2.asp-frontier.net, dns1.asp-frontier.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 1up.co.jp (unsigned zone)

⏱️ Timing

Total: 1528ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`219.99.172.186`

Analysis

Mail Server Role

mail.1up.co.jp is the mail server for 1up.co.jp.

IP Addresses

mail.1up.co.jp resolves to one IP number: 219.99.172.186.

other host names including dstr.org, 1up.co.jp, kokuzemi.net, fujishoko.net and mail.himawari-kids.jp share IP numbers with mail.1up.co.jp.

mail.1up.co.jp - robtex.com

mail.1up.co.jp

1up.co.jp