`s30.coreserver.jp`

DNSSEC	⚠️ Not signed
A	202.172.28.31^{🇯🇵 DRNET202.172.24.0/21}
		PTR	`s30.coreserver.jp`
MX	`s30.coreserver.jp` ⭐
		A	202.172.28.31^{🇯🇵 DRNET202.172.24.0/21}
			PTR	`s30.coreserver.jp`
TXT	`v=spf1 a:s30.coreserver.jp include:mxr.valueserver.jp ~all`

`coreserver.jp`

DNSSEC	⚠️ Not signed
A	104.18.24.150^{Cloudflare104.18.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.18.25.150^{Cloudflare104.18.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`gabriel.ns.cloudflare.com` ⭐
NS	`vera.ns.cloudflare.com`
MX	`mail.coreserver.jp` ⭐
TXT	`google-site-verification=M52iG-enU0nhGjZ1Rv0-Jd8Gpn3NEjwa4cWvyYct9tU`
TXT	`v=spf1 a:www.coreserver.jp ip4:202.172.25.31 include:_spf.google.com ~all`
TXT	`v=spf1 redirect=value-domain.com`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.18.24.150, 104.18.25.150
SOA	`gabriel.ns.cloudflare.com`dns@cloudflare.com serial=2400112445

WOT: SAFE (59/100)
rank #61720 globally
rank #1155 in the tld
WOT: SAFE (58/100)
📈 Tranco rank: #41,911

PTR for

31.28.172.202.in-addr.arpa

MX for

s30.coreserver.jp

Same first word

s30.de

s30.net

s30.se

s30.casino

s30.solutions

s30.at

s30.ru

s30.org

s30.jp

s30.com.au

s30.ch

s30.com

s30.eu

s30.pl

Similar names

0s3.net

30s.cn

s03.net

30s.nl

s03.nl

03s.de

30s.be

0s3.ru

03s.org

s03.it

30s.plus

0s3.de

30s.de

30s.com

30s.eu

30s.ca

30s.mobi

3s0.cn

03s.cn

03s.net

03s.xyz

s03.cloudapp.net

3s0.com

03s.ru

30s.ru

30s.ch

s03.de

30s.vn

30s.net

30s.org

30s.casino

03s.com

s03.cn

30s.fr

DNS History

2 records (2 active, 0 former)

●MXs30.coreserver.jp2015-08-21 → 2026-04-24 · 2 obs

● 2015-08-21 14:21:16
● 2026-04-24 22:19:24

●A202.172.28.312015-08-21 → 2026-04-24 · 2 obs

● 2015-08-21 14:21:16
● 2026-04-24 22:19:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
coreserver.jp	vera.ns.cloudflare.com, gabriel.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.147

NS records: vera.ns.cloudflare.com, gabriel.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coreserver.jp (unsigned zone)

⏱️ Timing

Total: 536ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`202.172.28.31`
MX	1	`s30.coreserver.jp (pri: 10)`
TXT	1	`v=spf1 a:s30.coreserver.jp include:mxr.v`

Analysis

Mail Server Role

s30.coreserver.jp serves as a mail server for s30.coreserver.jp.

IP Addresses

s30.coreserver.jp points to a single IP: 202.172.28.31.

Other host names, for instance hostmaster.green-dc.biz, yamayuri-w.net, uk-tokyo.com, youth-com.jp and ecoken.co.jp share IP numbers with s30.coreserver.jp.

Mail Servers

s30.coreserver.jp is handled by a single mail server.

s30.coreserver.jp points to IP number 202.172.28.31.

s30.coreserver.jp - robtex.com