ns4.us.opalstack.com - robtex.com

ns4.us.opalstack.com

DNSSEC⚠️ Not signed
A142.91.170.22🇺🇸 AS7203142.91.168.0/22 Leaseweb USA, Inc.
PTRwebmail.us.opalstack.com
MXmx1.de.opalstack.com ⭐
A2a01:7e01:e001:856::1🇩🇪 AKAMAI-LINODE-AP2a01:7e01::/32 Akamai Technologies
PTRmx1.de.opalstack.com
A139.162.189.90🇩🇪 AKAMAI-LINODE-AP139.162.160.0/19 Akamai Technologies
PTRmx1.de.opalstack.com
MXmx2.de.opalstack.com ⭐
A178.162.221.165🇩🇪 LEASEWEB-DE-FRA-10178.162.192.0/18
PTRmx2.de.opalstack.com
TXTv=spf1 include:spf.opalstack.com ~all

us.opalstack.com

DNSSEC⚠️ Not signed
A142.91.170.22🇺🇸 AS7203142.91.168.0/22 Leaseweb USA, Inc.
MXmx1.de.opalstack.com ⭐
MXmx2.de.opalstack.com ⭐
TXTv=spf1 include:spf.opalstack.com ~all

NS for

vdc.ad
jdtaylor.org

Same first word

ns4.no
ns4.gov.mn
ns4.net
ns4.sinaapp.com
ns4.org
ns4.alp1.ae.flow.ch
ns4.nc.tr
ns4.nhs.uk
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ns4.jelastic.saveincloud.net
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ns4.fastly-edge.com
ns4.net.au
ns4.com
ns4.go.gov.br
ns4.nic.in
ns4.123hjemmeside.dk
ns4.com.br
ns4.fr
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ns4.mycloudnas.com
ns4.is-a.dev
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ns4.police.uk
ns4.mircloud.host
ns4.nl
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ns4.gov.rs
ns4.ie
ns4.mynascloud.com
ns4.dyndns.org
ns4.vg
ns4.ru
ns4.pe.gov.br
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ns4.co.kr
ns4.duckdns.org
ns4.mil.cn
ns4.fastlylb.net
ns4.altervista.org
ns4.gov.mo
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ns4.pr.gov.br
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ns4.j.scaleforce.net

Similar names

sn4.de
4ns.in
n4s.com
n4s.fr
sn4.ru
s4n.ru
n4s.ca
sn4.cc
n4s.ru
4ns.cn
4ns.hu
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4ns.net
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sn4.fi
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sn4.com
n4s.net
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s4n.cc
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4ns.ru
sn4.org
n4s.co.uk
4ns.eu
s4n.com.br
n4s.fi
4sn.com
4sn.nl
sn4.co.uk
n4s.us
n4s.pl
4ns.su
n4s.org
4ns.com
sn4.me

DNS History

5 records (3 active, 2 former)

MXmx1.de.opalstack.commx2.de.opalstack.commx1.us.opalstack.commx2.us.opalstack.comA142.91.170.22
●MXmx1.de.opalstack.com2026-03-11 → 2026-04-24 · 11 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
○MXmx1.us.opalstack.com2026-02-19 → 2026-04-21 · 11 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
●MXmx2.de.opalstack.com2026-03-11 → 2026-04-24 · 11 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
○MXmx2.us.opalstack.com2026-02-19 → 2026-04-21 · 11 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
●A142.91.170.222026-02-19 → 2026-04-24 · 2 obs
● 2026-02-19 04:23:30
● 2026-04-24 04:16:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
opalstack.comns1.us.opalstack.com, ns2.us.opalstack.com, ns3.us.opalstack.com, ns1.de.opalstack.com4 records

✅ Authoritative Response

Server:139.162.174.250

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: 453ms | Queries: -

📄 Records

TypeCountSample Data
A1142.91.170.22
MX2mx2.de.opalstack.com (pri: 10), mx1.de.opalstack.com (pri: 10)
TXT1v=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 serves as a name server for vdc.ad and jdtaylor.org.

ns1.us.opalstack.com, ns2.us.opalstack.com and ns3.us.opalstack.com are commonly used as name servers together with ns4.us.opalstack.com.

IP Addresses

ns4.us.opalstack.com resolves to a single IP address: 142.91.170.22.

Other host names, such as webmail.us.opalstack.com and us.opalstack.com, share IP numbers with ns4.us.opalstack.com.

Mail Servers

ns4.us.opalstack.com is handled by two mail servers: mx1.de.opalstack.com and mx2.de.opalstack.com.

ns4.us.opalstack.com shares its mail server setup with other domains, including normfest.org, get-smart.net, www.pootergeek.com, catarinarivero.com and sueslittlefish.com.

ns4.us.opalstack.com shares at least partially some mail servers with other domains, for instance hospitalrun.io, humanleg.org.uk and 100-downloads.com.

These mail servers are commonly used alongside mx1.us.opalstack.com and mx2.us.opalstack.com.

Hosts with two IPs:

mx1.de.opalstack.com points to 2a01:7e01:e001:856::1 and 139.162.189.90.

Hosts with one IP:

mx2.de.opalstack.com points to 178.162.221.165.