🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`ns4.us.opalstack.com`

DNSSEC	⚠️ Not signed
A	142.91.170.22^{🇺🇸 AS7203142.91.168.0/22 Leaseweb USA, Inc.}
		PTR	`webmail.us.opalstack.com`
MX	`mx1.us.opalstack.com` ⭐
		A	108.62.123.121^{🇺🇸 LEASEWEB-US108.62.120.0/22 Leaseweb USA, Inc.}
			PTR	`mx1.us.opalstack.com`
MX	`mx2.us.opalstack.com` ⭐
		A	2605:fe80:2100:bf03:7::2^{🇺🇸 AS72032605:fe80::/32 Leaseweb USA, Inc. SFO-12 US}
			PTR	`mx2.us.opalstack.com`
		A	23.82.16.244^{🇺🇸 AS720323.82.16.0/21 Leaseweb USA, Inc.}
			PTR	`mx2.us.opalstack.com`
TXT	`v=spf1 include:spf.opalstack.com ~all`

`us.opalstack.com`

	DNSSEC	⚠️ Not signed
	A	142.91.170.22^{🇺🇸 AS7203142.91.168.0/22 Leaseweb USA, Inc.}
	MX	`mx1.us.opalstack.com` ⭐
	MX	`mx2.us.opalstack.com` ⭐
	TXT	`v=spf1 include:spf.opalstack.com ~all`

NS for

fobba.com.ng

yedi.com.ng

mikethiel.org

l-7.io

weaknuclearforce.ca

ramadanfeedtheneedy.org.ng

vdc.ad

wortmann.dev

illmichildrensfund.org

etymologi.ca

textism.cv

thechairs.org

jdtaylor.org

Previously NS for

movistarplus.pe

Same first word

ns4.no

ns4.gov.mn

ns4.net

ns4.cz

ns4.co.uk

ns4.org

ns4.mediatech.by

ns4.cn

ns4.alp1.ae.flow.ch

ns4.nc.tr

ns4.nhs.uk

ns4.de

ns4.ddns.net

ns4.my

ns4.siteleaf.net

ns4.ch

ns4.uz

ns4.us

ns4.dk

ns4.yandexcloud.net

ns4.myqnapcloud.com

ns4.site

ns4.fi

ns4.pi.gov.br

ns4.kasserver.com

ns4.xyz

ns4.lib.md.us

ns4.nz

ns4.org.ph

ns4.es.gov.br

ns4.jelastic.saveincloud.net

ns4.in

ns4.pages.dev

ns4.cloudjiffy.net

ns4.cloudflare.net

ns4.cc

ns4.gov.bh

ns4.com.cn

ns4.fastly-edge.com

ns4.ph

ns4.net.au

ns4.com

ns4.kr

ns4.go.gov.br

ns4.nic.in

ns4.123hjemmeside.dk

ns4.com.br

ns4.fr

ns4.gov.az

ns4.co

ns4.si

ns4.ink

ns4.in-berlin.de

ns4.hu

ns4.fj

ns4.ma.gov.br

ns4.ni

ns4.net.pl

ns4.mycloudnas.com

ns4.is-a.dev

ns4.upsunapp.com

ns4.police.uk

ns4.mircloud.host

ns4.com.ph

ns4.nl

ns4.uk

ns4.rest

ns4.gov.rs

ns4.ie

ns4.spdns.org

ns4.workers.dev

ns4.mynascloud.com

ns4.lublin.pl

ns4.dyndns.org

ns4.web.id

ns4.vg

ns4.ru

ns4.pe.gov.br

ns4.dev

ns4.gov.mu

ns4.co.kr

ns4.duckdns.org

ns4.mil.cn

ns4.fastlylb.net

ns4.altervista.org

ns4.net.ph

ns4.gov.mo

ns4.my.id

ns4.gov.ao

ns4.biz

ns4.pr.gov.br

ns4.cl

ns4.j.scaleforce.net

Similar names

sn4.de

4ns.in

4ns.casino

s4n.edu.vn

s4n.pl

sn4.to

4ns.me

4ns.shop

n4s.com

n4s.fr

sn4.ru

s4n.co.kr

s4n.ru

4ns.systems

sn4.cc

n4s.site

n4s.ru

4ns.cn

n4s.uk

s4n.space

4ns.hu

sn4.ch

n4s.hu

4ns.net

s4n.my.id

n4s.ee

sn4.ph

s4n.net

n4s.jp

4sn.eu

sn4.fi

n4s.workers.dev

4sn.net

sn4.se

4sn.de

s4n.ovh

n4s.casa

n4s.dk

n4s.info

s4n.nl

4ns.duckdns.org

4ns.pl

4ns.org

s4n.de

n4s.me

sn4.com.br

n4s.kz

4sn.my

4ns.ph

n4s.pro

sn4.be

sn4.com

Previous names

Next names

DNS History

5 records (3 active, 2 former)

○MXmx1.de.opalstack.com2026-03-11 → 2026-10-17 · 61 obs

○ 2026-02-19 04:23:30
● 2026-03-11 00:55:30
○ 2026-03-22 21:34:18
● 2026-03-23 23:05:08
● 2026-03-27 07:56:56
○ 2026-04-02 13:29:50
○ 2026-04-15 00:59:22
● 2026-04-15 18:32:32
○ 2026-04-18 08:23:14
○ 2026-04-21 23:58:52
● 2026-04-24 04:16:58
○ 2026-04-25 13:42:14
○ 2026-05-09 17:43:14
● 2026-05-11 07:52:04
○ 2026-05-11 12:47:38
○ 2026-05-12 00:49:50
● 2026-05-12 14:57:22
● 2026-05-13 14:16:36
○ 2026-05-14 17:09:56
● 2026-05-15 14:35:10
○ 2026-05-16 12:58:48
○ 2026-05-24 02:01:28
● 2026-06-04 16:29:10
○ 2026-06-13 06:51:56
● 2026-08-23 14:21:02
○ 2026-08-27 03:06:44
● 2026-08-28 03:08:36
○ 2026-08-28 19:01:10
● 2026-08-30 23:10:08
○ 2026-09-02 01:37:16
● 2026-09-06 02:02:44
○ 2026-09-07 18:46:52
● 2026-09-10 03:35:04
○ 2026-09-11 02:03:00
● 2026-09-17 07:08:06
○ 2026-09-17 14:11:14
● 2026-09-18 03:41:48
○ 2026-09-18 13:50:36
● 2026-09-19 19:40:32
○ 2026-09-20 16:19:58
● 2026-09-21 08:39:22
○ 2026-09-22 00:25:00
● 2026-09-22 02:05:18
○ 2026-09-25 13:46:06
● 2026-09-26 11:38:48
○ 2026-09-26 19:57:52
● 2026-09-28 18:25:10
○ 2026-09-29 05:37:06
● 2026-10-06 19:23:42
○ 2026-10-09 14:48:34
● 2026-10-14 12:15:40
○ 2026-10-15 06:20:10
● 2026-10-15 10:37:52
○ 2026-10-15 21:26:52
● 2026-10-16 05:00:38
○ 2026-10-16 14:22:42
● 2026-10-16 19:49:18
○ 2026-10-17 00:49:18
● 2026-10-17 03:27:56
○ 2026-10-17 06:08:10
○ 2026-10-17 06:08:14

●MXmx1.us.opalstack.com2026-02-19 → 2026-10-17 · 61 obs

● 2026-02-19 04:23:30
○ 2026-03-11 00:55:30
● 2026-03-22 21:34:18
○ 2026-03-23 23:05:08
○ 2026-03-27 07:56:56
● 2026-04-02 13:29:50
● 2026-04-15 00:59:22
○ 2026-04-15 18:32:32
● 2026-04-18 08:23:14
● 2026-04-21 23:58:52
○ 2026-04-24 04:16:58
● 2026-04-25 13:42:14
● 2026-05-09 17:43:14
○ 2026-05-11 07:52:04
● 2026-05-11 12:47:38
● 2026-05-12 00:49:50
○ 2026-05-12 14:57:22
○ 2026-05-13 14:16:36
● 2026-05-14 17:09:56
○ 2026-05-15 14:35:10
● 2026-05-16 12:58:48
● 2026-05-24 02:01:28
○ 2026-06-04 16:29:10
● 2026-06-13 06:51:56
○ 2026-08-23 14:21:02
● 2026-08-27 03:06:44
○ 2026-08-28 03:08:36
● 2026-08-28 19:01:10
○ 2026-08-30 23:10:08
● 2026-09-02 01:37:16
○ 2026-09-06 02:02:44
● 2026-09-07 18:46:52
○ 2026-09-10 03:35:04
● 2026-09-11 02:03:00
○ 2026-09-17 07:08:06
● 2026-09-17 14:11:14
○ 2026-09-18 03:41:48
● 2026-09-18 13:50:36
○ 2026-09-19 19:40:32
● 2026-09-20 16:19:58
○ 2026-09-21 08:39:22
● 2026-09-22 00:25:00
○ 2026-09-22 02:05:18
● 2026-09-25 13:46:06
○ 2026-09-26 11:38:48
● 2026-09-26 19:57:52
○ 2026-09-28 18:25:10
● 2026-09-29 05:37:06
○ 2026-10-06 19:23:42
● 2026-10-09 14:48:34
○ 2026-10-14 12:15:40
● 2026-10-15 06:20:10
○ 2026-10-15 10:37:52
● 2026-10-15 21:26:52
○ 2026-10-16 05:00:38
● 2026-10-16 14:22:42
○ 2026-10-16 19:49:18
● 2026-10-17 00:49:18
○ 2026-10-17 03:27:56
● 2026-10-17 06:08:10
● 2026-10-17 06:08:14

○MXmx2.de.opalstack.com2026-03-11 → 2026-10-17 · 61 obs

●MXmx2.us.opalstack.com2026-02-19 → 2026-10-17 · 61 obs

●A142.91.170.222026-02-19 → 2026-10-17 · 2 obs

● 2026-02-19 04:23:30
● 2026-10-17 06:08:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, h.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net...	-
opalstack.com	ns1.us.opalstack.com, ns2.us.opalstack.com, ns3.us.opalstack.com, ns1.de.opalstack.com	4 records

✅ Authoritative Response

Server:45.79.107.55

NS records: ns1.us.opalstack.com, ns2.us.opalstack.com, ns3.us.opalstack.com, ns1.de.opalstack.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opalstack.com (unsigned zone)

⏱️ Timing

Total: 366ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`142.91.170.22`
MX	2	`mx1.de.opalstack.com (pri: 10), mx2.de.opalstack.com (pri: 10)`
TXT	1	`v=spf1 include:spf.opalstack.com ~all`

📌 Glue Records Collected

Total: 4

In-bailiwick: 4 (ns1.us.opalstack.com, ns2.us.opalstack.com, ns3.us.opalstack.com...)

Analysis

Name Server Role

ns4.us.opalstack.com acts as an authoritative name server for fobba.com.ng, yedi.com.ng, mikethiel.org, l-7.io, weaknuclearforce.ca and several other domains.

ns4.us.opalstack.com is commonly paired with ns1.us.opalstack.com, ns2.us.opalstack.com and ns3.us.opalstack.com to act as name servers.

IP Addresses

ns4.us.opalstack.com resolves to one IP address: 142.91.170.22.

Further host names like webmail.us.opalstack.com and us.opalstack.com overlap in IP numbers with ns4.us.opalstack.com.

Mail Servers

Mail for ns4.us.opalstack.com is handled by two mail servers — mx1.us.opalstack.com and mx2.us.opalstack.com.

ns4.us.opalstack.com uses an identical mail server configuration to several other domains — among them bcortho.org, learas.com, quimby.ca and two more.

ns4.us.opalstack.com has at least partial mail server overlap with other domains such as beamproject.gr, hospitalrun.io, humanleg.org.uk and two more.

These mail servers are routinely seen in conjunction with the mail servers mx1.de.opalstack.com and mx2.de.opalstack.com.

Hostnames that resolve to two IP addresses:

mx2.us.opalstack.com resolves to two addresses: 23.82.16.244 and 2605:fe80:2100:bf03:7::2.

Hosts with just one IP address:

The hostname mx1.us.opalstack.com resolves to 108.62.123.121.

ns4.us.opalstack.com - robtex.com