step-u.com - dns.ninja

`step-u.com`

DNSSEC	⚠️ Not signed
A	157.7.44.171^{🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
		PTR	`users821.vip.heteml.jp`
NS	`ns1.value-domain.com` ⭐
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.value-domain.com`
		A	172.64.53.3^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns3.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns4.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.53.3^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`mail49.heteml.jp` ⭐
		A	157.7.189.15^{🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
			PTR	`mail-proxy.heteml.jp`
MX	`step-u.com`⁽²⁰⁾
		A	157.7.44.171^{🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
			PTR	`users821.vip.heteml.jp`
TXT	`v=spf1 include:_spf.heteml.jp ~all`
SOA	`ns1.value-domain.com`hostmaster@step-u.com 2023-08-29 #16

`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=1785648342

MX for

step-u.com

Same first word

step-u.com

Similar names

set-up.eu

set-up.org

st-eup.de

u-step.com

tse-pu.mn

pts-eu.com

set-up.fr

set-up.bg

set-up.ch

tsu-pe.de

set-up.co.jp

set-up.dk

eps-ut.com

set-up.ro

set-up.com.co

set-up.co.uk

set-up.us

set-up.se

tse-up.com

set-up.net

set-up.es

pts-eu.trafficmanager.net

set-up.de

set-up.com

set-up.com.au

set-up.training

set-up.it

pet-us.com

ept-us.com

set-up.be

set-up.info

set-up.hu

set-up.com.ua

set-up.ru

set-up.guru

set-up.me

DNS History

9 records (7 active, 2 former)

●NSns1.value-domain.com2015-07-12 → 2026-08-02 · 2 obs

● 2015-07-12 06:54:22
● 2026-08-02 05:41:32

●NSns2.value-domain.com2015-07-12 → 2026-08-02 · 2 obs

● 2015-07-12 06:54:22
● 2026-08-02 05:41:32

●NSns3.value-domain.com2026-02-14 → 2026-08-02 · 3 obs

○ 2015-07-12 06:54:22
● 2026-02-14 21:54:22
● 2026-08-02 05:41:32

●NSns4.value-domain.com2026-02-14 → 2026-08-02 · 3 obs

○ 2015-07-12 06:54:22
● 2026-02-14 21:54:22
● 2026-08-02 05:41:32

●MXmail49.heteml.jp2015-07-12 → 2026-08-02 · 2 obs

● 2015-07-12 06:54:22
● 2026-08-02 05:41:32

●MXstep-u.com2015-07-12 → 2026-08-02 · 2 obs

● 2015-07-12 06:54:22
● 2026-08-02 05:41:32

○A112.78.219.2472015-07-12 → 2015-07-12 · 3 obs

● 2015-07-12 06:54:22
○ 2015-11-14 13:13:42
○ 2026-08-02 05:41:32

○A157.7.188.1642015-11-14 → 2016-06-18 · 5 obs

○ 2015-07-12 06:54:22
● 2015-11-14 13:13:42
● 2016-06-18 10:07:42
○ 2026-02-14 21:54:22
○ 2026-08-02 05:41:32

●A157.7.44.1712026-02-14 → 2026-08-02 · 3 obs

○ 2016-06-18 10:07:42
● 2026-02-14 21:54:22
● 2026-08-02 05:41:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
step-u.com	ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com	4 records

✅ Authoritative Response

Server:172.64.52.38

NS records: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for step-u.com (unsigned zone)

⏱️ Timing

Total: 446ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`157.7.44.171`
NS	2	`ns2.value-domain.com, ns1.value-domain.com`
MX	2	`mail49.heteml.jp (pri: 10), step-u.com (pri: 20)`
TXT	1	`v=spf1 include:_spf.heteml.jp ~all`
SOA	1	`ns1.value-domain.com hostmaster.step-u.c`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com...)

Analysis

Mail Server Role

step-u.com serves as a mail server for step-u.com.

mail49.heteml.jp routinely functions as a mail server together with step-u.com.

IP Addresses

step-u.com has exactly one IP address — 157.7.44.171.

kansho.org, kiloi.net, sendai-ymca.org plus two other host names have IP numbers in common with step-u.com.

Name Servers

Four name servers handle the delegation for step-u.com: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com and ns4.value-domain.com.

There is at least partial name server overlap between step-u.com and other domains — shizunokai.com, jvex.net, chekr.net and two more among them.

These name servers tend to appear in combination with the name servers ns5.value-domain.com, ns13.value-domain.com, ns11.value-domain.com and ns12.value-domain.com.

Of the four host names ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com and ns4.value-domain.com, each resolves to a single IP address: ns1.value-domain.com to 172.64.52.38, ns2.value-domain.com to 172.64.53.3, ns3.value-domain.com to 172.64.52.38 and ns4.value-domain.com to 172.64.53.3.

ns1.value-domain.com and ns3.value-domain.com each have 172.64.52.38 IP addresses.

ns2.value-domain.com and ns4.value-domain.com each have 172.64.53.3 IP addresses.

Mail Servers

step-u.com delegates mail to two mail servers, namely step-u.com and mail49.heteml.jp.

At least some of the mail servers used by step-u.com are shared with other domains: goodboy.jp, nipponcha.jp, rin.golf and two others among them.

step-u.com → 157.7.44.171 and mail49.heteml.jp → 157.7.189.15: one IP number per host name.