`kumworks.com`

DNSSEC	⚠️ Not signed
A	49.212.235.65^{🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
		PTR	`www3355.sakura.ne.jp`
NS	`01.dnsv.jp` ⭐
		A	2400:8500:3300::53^{🇯🇵 GMO-DNS2400:8500:3300::/48 GMO Internet,inc.}
			PTR	`01.dnsv.jp`
		A	157.7.32.53^{🇯🇵 GMO-DNS157.7.32.0/24 GMO Internet,inc. Network-Team.}
			PTR	`01.dnsv.jp`
NS	`02.dnsv.jp`
		A	157.7.33.53^{🇯🇵 GMO-DNS157.7.33.0/24 GMO Internet,inc. Network-Team.}
			PTR	`02.dnsv.jp`
NS	`03.dnsv.jp` ⚠️ Not in parent delegation
		A	2400:8500:3000::53^{🇯🇵 GMO-DNS2400:8500:3000::/48 GMO Internet,inc.}
			PTR	`03.dnsv.jp`
		A	157.7.34.53^{🇯🇵 GMO-DNS157.7.34.0/24 GMO Internet,inc. Network-Team.}
			PTR	`03.dnsv.jp`
NS	`04.dnsv.jp` ⚠️ Not in parent delegation
		A	2400:8500:3fff::53^{🇯🇵 GMO-DNS2400:8500:3fff::/48 GMO Internet,inc.}
			PTR	`04.dnsv.jp`
		A	157.7.35.53^{🇯🇵 GMO-DNS157.7.35.0/24 GMO Internet,inc. Network-Team.}
			PTR	`04.dnsv.jp`
MX	`sokoani.sakura.ne.jp` ⭐
		A	49.212.235.65^{🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`www3355.sakura.ne.jp`
TXT	`v=spf1 a:www3355.sakura.ne.jp mx ~all`
SOA	`01.dnsv.jp`hostmaster@dnsv.jp serial=1706763677

`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=1774442122

Subdomains

mail.kumworks.com

DNS History

8 records (6 active, 2 former)

●NS01.dnsv.jp2015-07-15 → 2026-03-25 · 2 obs

● 2015-07-15 07:49:14
● 2026-03-25 12:46:22

●NS02.dnsv.jp2015-07-15 → 2026-03-25 · 2 obs

● 2015-07-15 07:49:14
● 2026-03-25 12:46:22

●NS03.dnsv.jp2026-03-25 → 2026-03-25 · 3 obs

○ 2015-07-15 07:49:14
● 2026-03-25 12:46:20
● 2026-03-25 12:46:22

●NS04.dnsv.jp2026-03-25 → 2026-03-25 · 3 obs

○ 2015-07-15 07:49:14
● 2026-03-25 12:46:20
● 2026-03-25 12:46:22

○MXmail.kumworks.com2015-07-15 → 2020-04-10 · 4 obs

● 2015-07-15 07:49:14
● 2020-04-10 16:22:58
○ 2026-03-25 12:46:20
○ 2026-03-25 12:46:22

●MXsokoani.sakura.ne.jp2026-03-25 → 2026-03-25 · 3 obs

○ 2020-04-10 16:22:58
● 2026-03-25 12:46:20
● 2026-03-25 12:46:22

○A202.181.97.132015-07-15 → 2020-04-10 · 4 obs

● 2015-07-15 07:49:14
● 2020-04-10 16:22:58
○ 2026-03-25 12:46:20
○ 2026-03-25 12:46:22

●A49.212.235.652026-03-25 → 2026-03-25 · 3 obs

○ 2020-04-10 16:22:58
● 2026-03-25 12:46:20
● 2026-03-25 12:46:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
kumworks.com	01.dnsv.jp, 02.dnsv.jp	-

✅ Authoritative Response

Server:157.7.32.53

NS records: 01.dnsv.jp, 02.dnsv.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kumworks.com (unsigned zone)

⏱️ Timing

Total: 1049ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`49.212.235.65`
NS	4	`01.dnsv.jp, 02.dnsv.jp...`
MX	1	`sokoani.sakura.ne.jp (pri: 10)`
TXT	1	`v=spf1 a:www3355.sakura.ne.jp mx ~all`
SOA	1	`01.dnsv.jp hostmaster.dnsv.jp`

Analysis

Hierarchy

kumworks.com is the parent of mail.kumworks.com.

IP Addresses

kumworks.com points to a single IP number: 49.212.235.65.

other host names for instance sun-shine.jp, it-com.co.jp, mail.kumworks.com, sokoani.com and avicosme.com share IP numbers with kumworks.com.

Name Servers

kumworks.com is delegated to four name servers: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and 04.dnsv.jp.

kumworks.com at least partially shares name servers with other domains, for instance asuka-zero.jp, talentbank.net, valuetrust.net, muracone.com and higuchiyama.com.

Two IPs for hosts:

01.dnsv.jp points to: 2400:8500:3300::53 and 157.7.32.53

03.dnsv.jp points to: 2400:8500:3000::53 and 157.7.34.53

04.dnsv.jp points to: 2400:8500:3fff::53 and 157.7.35.53

One IP for a host:

02.dnsv.jp points to: 157.7.33.53

Mail Servers

kumworks.com is handled by a single mail server, sokoani.sakura.ne.jp.

kumworks.com uses the same mail server setup as other domains such as sokoani.com and sokoani.sakura.ne.jp.

Host name sokoani.sakura.ne.jp points to IP address 49.212.235.65.

kumworks.com - robtex.com

kumworks.com

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