code4u.org - dns.ninja

`code4u.org`

DNSSEC	⚠️ Not signed
A	118.27.2.172^{🇯🇵 GMO-INTERNET118.27.0.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
		PTR	`v118-27-2-172.1xts.static.cnode.io`
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`
		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`
		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	`mail73.conoha.ne.jp` ⭐
		A	118.27.122.178^{🇯🇵 GMO-INTERNET118.27.122.0/24 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
			PTR	`mail73.conoha.ne.jp`
TXT	`v=spf1 include:_spf.conoha.ne.jp ~all`
SOA	`01.dnsv.jp`hostmaster@dnsv.jp serial=1666179627

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1785682671

Subdomains

www.code4u.org

Same first word

code4u.cn

code4u.co

code4u.co.il

code4u.com

code4u.net

code4u.nl

code4u.de

code4u.vn

code4u.org

code4u.ru

Similar names

deco4u.com

deco4u.de

4ucode.com

4educo.com

edoc4u.com

DNS History

11 records (6 active, 5 former)

●NS01.dnsv.jp2026-04-14 → 2026-08-02 · 3 obs

○ 2015-11-06 09:49:10
● 2026-04-14 05:30:58
● 2026-08-02 15:38:50

●NS02.dnsv.jp2026-04-14 → 2026-08-02 · 3 obs

○ 2015-11-06 09:49:10
● 2026-04-14 05:30:58
● 2026-08-02 15:38:50

●NS03.dnsv.jp2026-04-14 → 2026-08-02 · 3 obs

○ 2015-11-06 09:49:10
● 2026-04-14 05:30:58
● 2026-08-02 15:38:50

●NS04.dnsv.jp2026-04-14 → 2026-08-02 · 3 obs

○ 2015-11-06 09:49:10
● 2026-04-14 05:30:58
● 2026-08-02 15:38:50

○NSns1.code4u.org2015-06-25 → 2015-11-06 · 4 obs

● 2015-06-25 14:18:32
● 2015-11-06 09:49:10
○ 2026-04-14 05:30:58
○ 2026-08-02 15:38:50

○NSns2.code4u.org2015-06-25 → 2015-11-06 · 4 obs

● 2015-06-25 14:18:32
● 2015-11-06 09:49:10
○ 2026-04-14 05:30:58
○ 2026-08-02 15:38:50

●MXmail73.conoha.ne.jp2026-04-14 → 2026-08-02 · 3 obs

○ 2017-08-07 09:21:58
● 2026-04-14 05:30:58
● 2026-08-02 15:38:50

○MXmx1.code4u.org2015-11-06 → 2017-08-07 · 4 obs

● 2015-11-06 09:49:10
● 2017-08-07 09:21:58
○ 2026-04-14 05:30:58
○ 2026-08-02 15:38:50

○MXmx2.code4u.org2015-11-06 → 2017-08-07 · 4 obs

● 2015-11-06 09:49:10
● 2017-08-07 09:21:58
○ 2026-04-14 05:30:58
○ 2026-08-02 15:38:50

●A118.27.2.1722026-04-14 → 2026-08-02 · 3 obs

○ 2017-08-07 09:21:58
● 2026-04-14 05:30:58
● 2026-08-02 15:38:50

○A157.7.163.1952015-06-25 → 2017-08-07 · 4 obs

● 2015-06-25 14:18:32
● 2017-08-07 09:21:58
○ 2026-04-14 05:30:58
○ 2026-08-02 15:38:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org	-
code4u.org	02.dnsv.jp, 01.dnsv.jp, 04.dnsv.jp, 03.dnsv.jp	-

✅ Authoritative Response

Server:157.7.33.53

NS records: 02.dnsv.jp, 01.dnsv.jp, 04.dnsv.jp, 03.dnsv.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for code4u.org (unsigned zone)

⏱️ Timing

Total: 1036ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`118.27.2.172`
NS	4	`01.dnsv.jp, 02.dnsv.jp...`
MX	1	`mail73.conoha.ne.jp (pri: 10)`
TXT	1	`v=spf1 include:_spf.conoha.ne.jp ~all`
SOA	1	`01.dnsv.jp hostmaster.dnsv.jp`

Analysis

Hierarchy

code4u.org serves as the parent of www.code4u.org.

IP Addresses

code4u.org resolves to just one IP address, 118.27.2.172.

code4u.org shares its IP numbers with other host names like v118-27-2-172.1xts.static.cnode.io, www.code4u.org and technoledge.jp.

Name Servers

The NS records for code4u.org point to four name servers: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and 04.dnsv.jp.

code4u.org has at least partial name server overlap with other domains, such as kenki.tv, amitriptylinetab.online, provigiltab.online and two others.

Host names that have two IP addresses:

The A records for 01.dnsv.jp return 157.7.32.53 and 2400:8500:3300::53.

The A records for 03.dnsv.jp return 157.7.34.53 and 2400:8500:3000::53.

The A records for 04.dnsv.jp return 157.7.35.53 and 2400:8500:3fff::53.

Host names that point to one IP address:

02.dnsv.jp resolves to the IP address 157.7.33.53.

Mail Servers

The sole mail server for code4u.org is mail73.conoha.ne.jp.

Among the domains sharing a mail server setup with code4u.org are teddybearsforest.com, narita.com, gadget-trend.net and two others.

There is at least a partial MX overlap between code4u.org and other domains, including holy.com.mx, interior-sale.com, teineclover.com and two others.

These mail servers often co-occur with the mail servers mx.unit01.paasmail.tyo1.conoha.io.

mail73.conoha.ne.jp resolves to 118.27.122.178 and no other IP number.