`s139.coreserver.jp`

DNSSEC	⚠️ Not signed
A	202.172.28.140^{🇯🇵 DRNET202.172.24.0/21}
		PTR	`s139.coreserver.jp`
MX	`s139.coreserver.jp` ⭐
		A	202.172.28.140^{🇯🇵 DRNET202.172.24.0/21}
			PTR	`s139.coreserver.jp`
TXT	`v=spf1 a:s139.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	104.18.24.150, 104.18.25.150
SOA	`gabriel.ns.cloudflare.com`dns@cloudflare.com serial=2399147664

WOT: SAFE (70/100)
rank #62470 globally
rank #1150 in the tld
WOT: SAFE (70/100)
📈 Tranco rank: #75,554

PTR for

140.28.172.202.in-addr.arpa

MX for

s139.coreserver.jp

Subdomains

pic.s139.coreserver.jp

Same first word

s139.com

Similar names

91s3.com

913s.cn

391s.com

s319.cc

931s.com

319s.cc

s319.com

139s.net

DNS History

2 records (2 active, 0 former)

●MXs139.coreserver.jp2015-08-26 → 2026-03-25 · 3 obs

○ 2008-05-05 05:24:42
● 2015-08-26 05:31:18
● 2026-03-25 05:29:32

●A202.172.28.1402015-08-26 → 2026-03-25 · 3 obs

○ 2008-05-05 05:24:42
● 2015-08-26 05:31:18
● 2026-03-25 05:29:32

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:172.64.35.244

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: 551ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`202.172.28.140`
MX	1	`s139.coreserver.jp (pri: 10)`
TXT	1	`v=spf1 a:s139.coreserver.jp include:mxr.`

Analysis

Hierarchy

s139.coreserver.jp is a parent of pic.s139.coreserver.jp.

Mail Server Role

s139.coreserver.jp serves as the mail server for s139.coreserver.jp.

IP Addresses

s139.coreserver.jp points to a single IP address: 202.172.28.140.

Other host names such as hostmaster.ryuzie.com, berryzplus.com, katahira.info, mail.d-navi.info and mail.merijapan.org share IP numbers with s139.coreserver.jp.

Mail Servers

Mail for s139.coreserver.jp is handled by a single mail server, s139.coreserver.jp.

Host s139.coreserver.jp points to IP 202.172.28.140.

s139.coreserver.jp - robtex.com