rivabook.com - dns.ninja

`rivabook.com`

DNSSEC	⚠️ Not signed
A	157.7.44.179^{🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
		PTR	`users260.vip.heteml.jp`
NS	`rivabook.com` ⭐
		A	157.7.44.179^{🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
			PTR	`users260.vip.heteml.jp`
NS	`dns01.muumuu-domain.com`
		A	202.239.23.39^{🇯🇵 IDC202.239.23.0/24 Frontier Inc.}
NS	`dns02.muumuu-domain.com`
		A	160.251.249.62^{🇯🇵 GMOOSK-NET160.251.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
MX	`mail18.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`
TXT	`v=spf1 include:_spf.heteml.jp ~all`
SOA	`rivabook.com`postmaster@rivabook.com serial=1755673614

`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=1785932799

NS for

rivabook.com

Same first word

rivabook.com

Similar names

ravibook.ir

boroviak.name

borikova.sk

vaoroikb.cc

bakirovo.com

bakirovo.ru

boroviak.de

DNS History

13 records (5 active, 8 former)

○NSdns0.heteml.jp2015-08-09 → 2016-06-25 · 4 obs

● 2015-08-09 05:00:08
● 2016-06-25 05:12:48
○ 2017-03-21 06:17:38
○ 2026-08-05 12:52:46

●NSdns01.muumuu-domain.com2017-03-21 → 2026-08-05 · 3 obs

○ 2016-06-25 05:12:48
● 2017-03-21 06:17:38
● 2026-08-05 12:52:46

●NSdns02.muumuu-domain.com2017-03-21 → 2026-08-05 · 3 obs

○ 2016-06-25 05:12:48
● 2017-03-21 06:17:38
● 2026-08-05 12:52:46

○NSdns1.heteml.jp2015-08-09 → 2016-06-25 · 4 obs

● 2015-08-09 05:00:08
● 2016-06-25 05:12:48
○ 2017-03-21 06:17:38
○ 2026-08-05 12:52:46

●NSrivabook.com2017-03-21 → 2026-08-05 · 3 obs

○ 2016-06-25 05:12:48
● 2017-03-21 06:17:38
● 2026-08-05 12:52:46

●MXmail18.heteml.jp2017-03-21 → 2026-08-05 · 3 obs

○ 2016-06-25 05:12:48
● 2017-03-21 06:17:38
● 2026-08-05 12:52:46

○MXmx-proxy501.heteml.jp2015-08-09 → 2016-06-25 · 4 obs

● 2015-08-09 05:00:08
● 2016-06-25 05:12:48
○ 2017-03-21 06:17:38
○ 2026-08-05 12:52:46

○MXmx-proxy502.heteml.jp2015-08-09 → 2016-06-25 · 4 obs

● 2015-08-09 05:00:08
● 2016-06-25 05:12:48
○ 2017-03-21 06:17:38
○ 2026-08-05 12:52:46

○A112.78.219.1692015-08-09 → 2015-08-09 · 3 obs

● 2015-08-09 05:00:08
○ 2015-11-30 11:50:58
○ 2026-08-05 12:52:46

○A157.7.188.1072017-03-21 → 2017-03-21 · 4 obs

○ 2016-06-25 05:12:48
● 2017-03-21 06:17:38
○ 2020-01-13 18:52:16
○ 2026-08-05 12:52:46

○A157.7.188.2062015-11-30 → 2016-06-25 · 5 obs

○ 2015-08-09 05:00:08
● 2015-11-30 11:50:58
● 2016-06-25 05:12:48
○ 2017-03-21 06:17:38
○ 2026-08-05 12:52:46

●A157.7.44.1792026-04-13 → 2026-08-05 · 3 obs

○ 2020-01-13 18:52:16
● 2026-04-13 00:36:40
● 2026-08-05 12:52:46

○A157.7.44.2132020-01-13 → 2020-01-13 · 4 obs

○ 2017-03-21 06:17:38
● 2020-01-13 18:52:16
○ 2026-04-13 00:36:40
○ 2026-08-05 12:52:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
rivabook.com	dns01.muumuu-domain.com, dns02.muumuu-domain.com	2 records

✅ Authoritative Response

Server:202.239.23.39

NS records: dns01.muumuu-domain.com, dns02.muumuu-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rivabook.com (unsigned zone)

⏱️ Timing

Total: 526ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`157.7.44.179`
NS	2	`dns02.muumuu-domain.com, dns01.muumuu-domain.com`
MX	1	`mail18.heteml.jp (pri: 50)`
TXT	1	`v=spf1 include:_spf.heteml.jp ~all`
SOA	1	`rivabook.com postmaster.rivabook.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns01.muumuu-domain.com, dns02.muumuu-domain.com)

Analysis

Name Server Role

The NS records for rivabook.com point back to rivabook.com itself.

dns01.muumuu-domain.com and dns02.muumuu-domain.com are often used as name servers in combination with rivabook.com.

IP Addresses

rivabook.com resolves to just one IP address, 157.7.44.179.

Two other host names, along with beis.co.jp, masudajuku.jp and sustb.com, also share IP numbers with rivabook.com.

Name Servers

Authority for rivabook.com is delegated across three name servers: rivabook.com, dns01.muumuu-domain.com and dns02.muumuu-domain.com.

At least some of rivabook.com's name servers are shared with other domains, for example aircast.jp, elephantlife.com, share-yap.com and two more.

rivabook.com points to 157.7.44.179; dns01.muumuu-domain.com points to 202.239.23.39; dns02.muumuu-domain.com points to 160.251.249.62 — each hostname maps to exactly one IP address.

Mail Servers

The sole mail server for rivabook.com is mail18.heteml.jp.

Among the domains sharing a mail server setup with rivabook.com are niteplaya.com, entrancecafe.com, neve.jp and two others.

rivabook.com overlaps on mail servers with certain other domains, web-inventory.jp among them.

mail18.heteml.jp carries a single IP number, which is 157.7.189.15.