`ns4.opus1.com`

DNSSEC	⚠️ Not signed
A	128.196.13.18^{🇺🇸 THE-1128.196.0.0/16 auto-generated route object for 128.196.0.0/16}
		PTR	`ns4.opus1.arizona.edu`
TXT	`Opus One Name Server`

`opus1.com`

	DNSSEC	⚠️ Not signed
	A	192.245.12.152^{🇺🇸 OPUSONE192.245.12.0/24 Opus One OPUS1-NET 12}
	NS	`ns6.opus1.com` ⭐
	NS	`ns.opus1.com`
	NS	`ns1.arizona.edu` ⚠️ Not in parent delegation
	NS	`ns2.arizona.edu` ⚠️ Not in parent delegation
	NS	`ns3.arizona.edu` ⚠️ Not in parent delegation
	NS	`ns4.arizona.edu` ⚠️ Not in parent delegation
	MX	`in1-smtp.messagingengine.com` ⭐
	MX	`in2-smtp.messagingengine.com`⁽¹⁰²⁰⁾
	TXT	`v=spf1 include:spf.messagingengine.com a mx ptr ip4:192.245.12.0/24 ip6:2001:...`
	SOA	`NS.Opus1.COM`hostmaster@Opus1.COM 2025-12-03 #1

WOT: SAFE (64/100)
rank #804099 globally
rank #366440 in the tld
WOT: SAFE (81/100)
📈 Tranco rank: #302,470

Previously NS for

Same first word

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ns4.pe.gov.br

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ns4.duckdns.org

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ns4.fastlylb.net

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ns4.gov.mo

ns4.gov.ao

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ns4.nhs.uk

ns4.de

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ns4.uz

ns4.us

ns4.dk

ns4.yandexcloud.net

ns4.myqnapcloud.com

ns4.site

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ns4.ms.gov.br

ns4.kasserver.com

ns4.lib.md.us

ns4.nz

ns4.es.gov.br

ns4.it.com

ns4.jelastic.saveincloud.net

ns4.in

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ns4.com

ns4.go.gov.br

ns4.nic.in

ns4.123hjemmeside.dk

ns4.com.br

ns4.fr

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ns4.co

ns4.in-berlin.de

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ns4.fj

ns4.ma.gov.br

ns4.ni

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ns4.to.gov.br

ns4.mycloudnas.com

ns4.is-a.dev

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ns4.police.uk

ns4.mircloud.host

ns4.nl

ns4.uk

ns4.gov.rs

ns4.ie

ns4.mynascloud.com

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ns4.vg

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sn4.co.uk

n4s.us

n4s.pl

4ns.su

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4ns.com

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s4n.co

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s4n.ru

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s4n.nl

4ns.pl

4ns.org

s4n.de

sn4.com.br

sn4.com

n4s.net

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s4n.cc

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sn4.org

n4s.co.uk

4ns.eu

s4n.com.br

n4s.fi

4sn.com

4sn.nl

DNS History

1 record (1 active, 0 former)

●A128.196.13.182009-02-02 → 2026-03-26 · 2 obs

● 2009-02-02 04:09:18
● 2026-03-26 04:15:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
opus1.com	ns.opus1.com, ns6.opus1.com, ns1.arizona.edu, ns2.arizona.edu...	2 records

✅ Authoritative Response

Server:2001:428:aa02:412::50

NS records: ns.opus1.com, ns6.opus1.com, ns1.arizona.edu, ns2.arizona.edu, ns3.arizona.edu, ns4.arizona.edu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opus1.com (unsigned zone)

⏱️ Timing

Total: 212ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`128.196.13.18`
TXT	1	`Opus One Name Server`

📌 Glue Records Collected

Total: 2

In-bailiwick: 2 (ns.opus1.com, ns6.opus1.com)

Analysis

IP Addresses

ns4.opus1.com points to a single IP address: 128.196.13.18.

Other host names, for instance ns4.opus1.arizona.edu, share IP numbers with ns4.opus1.com.

ns4.opus1.com - robtex.com

ns4.opus1.com

opus1.com