🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`mail.bluecrystal.com`

DNSSEC	⚠️ Not signed
A	160.251.150.139^{🇯🇵 GMOOSK-NET160.251.150.0/24 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
		PTR	`s39.xrea.com`

`bluecrystal.com`

	DNSSEC	⚠️ Not signed
	A	160.251.150.139^{🇯🇵 GMOOSK-NET160.251.150.0/24 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
	NS	`ns1.value-domain.com` ⭐
	NS	`ns2.value-domain.com`
	NS	`ns3.value-domain.com` ⚠️ Not in zone NS records
	NS	`ns4.value-domain.com` ⚠️ Not in zone NS records
	NS	`ns5.value-domain.com` ⚠️ Not in zone NS records
	MX	`mail.bluecrystal.com` ⭐
	SOA	`ns1.value-domain.com`hostmaster@bluecrystal.com 2020-08-26 #18

MX for

bluecrystal.com

Same first word

mail.inf.br

mail.4u.com

mail.edu.tw

mail.gov.rs

mail.dnsalias.net

mail.pro.br

mail.ne.jp

mail.co.jp

mail.be

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Similar names

mila.support

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almi.fr

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ilam.cn

imal.se

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DNS History

2 records (1 active, 1 former)

●A160.251.150.1392026-05-30 → 2026-08-16 · 3 obs

○ 2016-09-17 22:16:18
● 2026-05-30 18:44:32
● 2026-08-16 10:33:12

○A203.189.104.1392015-08-20 → 2016-09-17 · 4 obs

● 2015-08-20 03:07:38
● 2016-09-17 22:16:18
○ 2026-05-30 18:44:32
○ 2026-08-16 10:33:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, f.gtld-servers.net, k.gtld-servers.net, h.gtld-servers.net...	-
bluecrystal.com	ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com...	5 records

✅ Authoritative Response

Server:172.64.53.3

NS records: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com, ns5.value-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bluecrystal.com (unsigned zone)

⏱️ Timing

Total: 435ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`160.251.150.139`

📌 Glue Records Collected

Total: 5

Out-of-bailiwick: 5 (ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com...)

Analysis

Mail Server Role

bluecrystal.com uses mail.bluecrystal.com as a mail server.

IP Addresses

mail.bluecrystal.com resolves to one IP address: 160.251.150.139.

mizer.jp, konuta.com, n2s.s39.xrea.com and two other host names share IP numbers with mail.bluecrystal.com.

mail.bluecrystal.com - robtex.com