`cryptopals.net`

DNSSEC	⚠️ Not signed
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}
SOA	`dns01.muumuu-domain.com`postmaster@cryptopals.net serial=1737027028

`net`

	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=1774539382

Same first word

cryptopals.net

cryptopals.com

Similar names

polystarpc.com

DNS History

2 records (2 active, 0 former)

●NSdns01.muumuu-domain.com2026-02-23 → 2026-03-26 · 2 obs

● 2026-02-23 21:08:22
● 2026-03-26 15:59:20

●NSdns02.muumuu-domain.com2026-02-23 → 2026-03-26 · 2 obs

● 2026-02-23 21:08:22
● 2026-03-26 15:59:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	j.gtld-servers.net, k.gtld-servers.net, i.gtld-servers.net, m.gtld-servers.net...	-
cryptopals.net	dns01.muumuu-domain.com, dns02.muumuu-domain.com	-

✅ 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 cryptopals.net (unsigned zone)

⏱️ Timing

Total: 827ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns01.muumuu-domain.com, dns02.muumuu-domain.com`
SOA	1	`dns01.muumuu-domain.com postmaster.crypt`

Analysis

Name Servers

cryptopals.net is delegated to two name servers: dns01.muumuu-domain.com and dns02.muumuu-domain.com.

cryptopals.net uses the same name server setup as other domains, including nrhd.co.jp, greddy-shop.com, namekawasawori.com, fudousan-kanteishi.net and shibaken.style.

At least part of the name servers for cryptopals.net are shared with other domains, for instance shinzai.co.jp, naco-i.com, mx1.jp, oaktree-lab.com and s-e-s.jp.

Hostnames with a single IP

dns01.muumuu-domain.com resolves to: 202.239.23.39.

dns02.muumuu-domain.com resolves to: 160.251.249.62.

cryptopals.net - robtex.com

cryptopals.net

net