`concretenet.com`

DNSSEC	⚠️ Not signed
NS	`udns1.ultradns.net` ⚠️ Not in zone NS records
		A	2001:502:f3ff::d^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`udns1.ultradns.net`
		A	204.69.234.1^{🇺🇸 MAINT-ID-12008204.69.234.0/24 Neustar}
			PTR	`udns1.ultradns.net`
NS	`udns2.ultradns.net` ⚠️ Not in zone NS records
		A	2610:a1:1014::d^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`udns2.ultradns.net`
		A	204.74.101.1^{🇺🇸 MAINT-ID-12008204.74.101.0/24 Neustar}
			PTR	`udns2.ultradns.net`

`com`

	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=1785089387

Same first word

concretenet.com

Similar names

DNS History

3 records (2 active, 1 former)

●NSudns1.ultradns.net2007-10-28 → 2026-07-26 · 4 obs

● 2007-10-28 16:49:50
○ 2015-07-16 17:17:06
● 2026-06-30 15:00:32
● 2026-07-26 18:26:10

●NSudns2.ultradns.net2007-10-28 → 2026-07-26 · 4 obs

● 2007-10-28 16:49:50
○ 2015-07-16 17:17:06
● 2026-06-30 15:00:32
● 2026-07-26 18:26:10

○A66.151.101.812007-10-28 → 2007-10-28 · 3 obs

● 2007-10-28 16:49:50
○ 2015-07-16 17:17:06
○ 2026-07-26 18:26:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
concretenet.com	udns1.ultradns.net, udns2.ultradns.net	-

✅ Authoritative Response

Server:204.74.101.1

NS records: udns1.ultradns.net, udns2.ultradns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for concretenet.com (unsigned zone)

⏱️ Timing

Total: 148ms | Queries: -

📄 Records

Type	Count	Sample Data

Analysis

Name Servers

concretenet.com has two authoritative name servers — udns1.ultradns.net and udns2.ultradns.net.

concretenet.com uses the same name servers as several other domains — among them creori.com, aviracrypto.org, 142.139.205.in-addr.arpa and two more.

There is at least partial name server overlap between concretenet.com and other domains — heartlandportfoliomanager.com, imbd-professional.net, herbchambersvolvoofdedham.net and two more among them.

These name servers regularly appear alongside pdns1.ultradns.net, pdns2.ultradns.net, pdns5.ultradns.info and 5 other name servers in NS record sets.

Both udns1.ultradns.net and udns2.ultradns.net have two IP addresses each. udns1.ultradns.net resolves to 204.69.234.1 and 2001:502:f3ff::d; udns2.ultradns.net resolves to 204.74.101.1 and 2610:a1:1014::d.

concretenet.com - robtex.com

concretenet.com

com