`b37.coreserver.jp`

DNSSEC	⚠️ Not signed
A	202.172.25.38^{🇯🇵 DRNET202.172.24.0/21}
		PTR	`b37.coreserver.jp`
MX	`b37.coreserver.jp` ⭐
		A	202.172.25.38^{🇯🇵 DRNET202.172.24.0/21}
			PTR	`b37.coreserver.jp`
TXT	`v=spf1 a:b37.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 (60/100)
rank #61462 globally
rank #1151 in the tld
WOT: SAFE (58/100)
📈 Tranco rank: #42,044

PTR for

38.25.172.202.in-addr.arpa

MX for

b37.coreserver.jp

Previously MX for

svhdchain.com

svachain.com

dev-colorcontact.com

Same first word

b37.vc

b37.org

b37.bet

b37.co

b37.net

b37.com

b37.at

b37.app

b37.de

b37.eu

Similar names

3b7.ru

37b.com

b73.(0x736578)y

73b.de

b73.com

37b.io

7b3.top

3b7.com

b73.dk

7b3.de

73b.net

73b.co

37b.nl

b73.biz

7b3.eu

b73.de

b73.net

b73.nl

37b.de

b73.it

37b.ru

37b.cn

b73.org

37b.it

7b3.net

3b7.net

DNS History

2 records (2 active, 0 former)

●MXb37.coreserver.jp2015-07-19 → 2026-04-15 · 2 obs

● 2015-07-19 14:10:48
● 2026-04-15 04:57:56

●A202.172.25.382015-07-19 → 2026-04-15 · 2 obs

● 2015-07-19 14:10:48
● 2026-04-15 04:57:56

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:108.162.192.147

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coreserver.jp (unsigned zone)

⏱️ Timing

Total: 712ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`202.172.25.38`
MX	1	`b37.coreserver.jp (pri: 10)`
TXT	1	`v=spf1 a:b37.coreserver.jp include:mxr.v`

Analysis

Mail Server Role

The mail server for b37.coreserver.jp is b37.coreserver.jp.

IP Addresses

b37.coreserver.jp maps to IP address 202.172.25.38.

Other host names, for instance yamaiko.com, eiko-retail.com, monolithjapan.co.jp, hanakouji.com and mx.abedenki.com share IP numbers with b37.coreserver.jp.

Mail Servers

One mail server serves b37.coreserver.jp.

b37.coreserver.jp points to one IP number: 202.172.25.38.

b37.coreserver.jp - robtex.com