`blue-ground.com`

DNSSEC	⚠️ Not signed
NS	`ns1.activeworks.co.jp` ⭐
		A	133.242.140.23^{🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan}
			PTR	`sakura023.activeworks.co.jp`
NS	`ns.activeworks.co.jp`
		A	153.126.175.155^{🇯🇵 SAKURA-A153.126.128.0/17 (ISHIKARI) SAKURA Internet // HOKKAIDO JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan}
			PTR	`sakura155.activeworks.co.jp`
MX	`blueground-com01b.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:cc09::^{🇸🇬 Microsoft2a01:111:f000::/36}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1a::8^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-tydpr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1f::4^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-os8pr02cu00104.inbound.protection.outlook.com`
		A	52.101.124.117^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-tydpr03cu00105.inbound.protection.outlook.com`
		A	52.101.137.0^{🇸🇬 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	52.101.157.80^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os8pr02cu00100.inbound.protection.outlook.com`
TXT	`MS=ms18122410`
TXT	`v=spf1 include:spf.protection.outlook.com include:_spf.google.com +ip4:153.12...`
SOA	`ns.activeworks.co.jp`admin@activeworks.co.jp 2025-01-01 #1

`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.net`nstld@verisign-grs.com serial=1778795356

Subdomains

mail.blue-ground.com

mail2.blue-ground.com

Same first word

blue-ground.com

DNS History

7 records (3 active, 4 former)

●NSns.activeworks.co.jp2015-07-01 → 2026-05-14 · 2 obs

● 2015-07-01 01:28:20
● 2026-05-14 22:16:20

●NSns1.activeworks.co.jp2015-07-01 → 2026-05-14 · 2 obs

● 2015-07-01 01:28:20
● 2026-05-14 22:16:20

●MXblueground-com01b.mail.protection.outlook.com2026-03-25 → 2026-05-14 · 3 obs

○ 2020-01-30 21:50:44
● 2026-03-25 14:16:32
● 2026-05-14 22:16:20

○MXmail.blue-ground.com2015-07-01 → 2020-01-30 · 7 obs

● 2015-07-01 01:28:20
● 2016-02-06 11:17:58
○ 2016-05-06 23:09:20
● 2017-02-11 07:15:32
● 2020-01-30 21:50:44
○ 2026-03-25 14:16:32
○ 2026-05-14 22:16:20

○MXmail2.blue-ground.com2016-05-06 → 2016-05-06 · 4 obs

○ 2016-02-06 11:17:58
● 2016-05-06 23:09:20
○ 2017-02-11 07:15:32
○ 2026-05-14 22:16:20

○A153.120.60.1082017-02-11 → 2020-01-30 · 5 obs

○ 2016-05-06 23:09:20
● 2017-02-11 07:15:32
● 2020-01-30 21:50:44
○ 2026-03-25 14:16:32
○ 2026-05-14 22:16:20

○A210.175.250.1092015-07-01 → 2016-05-06 · 4 obs

● 2015-07-01 01:28:20
● 2016-05-06 23:09:20
○ 2017-02-11 07:15:32
○ 2026-05-14 22:16:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, g.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net...	-
blue-ground.com	ns.activeworks.co.jp, ns1.activeworks.co.jp	-

✅ Authoritative Response

Server:133.242.140.23

NS records: ns.activeworks.co.jp, ns1.activeworks.co.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for blue-ground.com (unsigned zone)

⏱️ Timing

Total: 1832ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns1.activeworks.co.jp, ns.activeworks.co.jp`
MX	1	`blueground-com01b.mail.protection.outloo`
TXT	2	`MS=ms18122410, v=spf1 include:spf.protection.outlook.co`
SOA	1	`ns.activeworks.co.jp admin.activeworks.c`

Analysis

Hierarchy

blue-ground.com is a parent of mail.blue-ground.com and mail2.blue-ground.com.

Name Servers

blue-ground.com is delegated to two name servers ns1.activeworks.co.jp and ns.activeworks.co.jp.

blue-ground.com shares the same name server setup as other domains, for instance nhi.jp, activeworks.mobi, activeworks.info, activeworks.co.jp and acsc.jp.

Host names with one IP number:

ns1.activeworks.co.jp points to 133.242.140.23

ns.activeworks.co.jp points to 153.126.175.155

Mail Servers

blue-ground.com is handled by a single mail server, blueground-com01b.mail.protection.outlook.com.

The host name blueground-com01b.mail.protection.outlook.com resolves to six IP numbers: 2a01:111:f403:cc09::, 2a01:111:f403:cc1a::8, 2a01:111:f403:cc1f::4, 52.101.124.117, 52.101.137.0 and 52.101.157.80.

blue-ground.com - robtex.com

blue-ground.com

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