`criticalstart.us`

DNSSEC	⚠️ Not signed
NS	`ns1.dnsimple.com` ⚠️ Not in zone NS records
		A	2400:cb00:2049:1::a29f:1804^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns1.dnsimple.com`
		A	162.159.24.4^{Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.dnsimple.com`
NS	`ns2.dnsimple.com` ⚠️ Not in zone NS records
		A	2620:111:8005::53^{🇺🇸 AS327712620:111:8005::/48 Vultr Customer Route}
		A	199.247.153.53^{🇺🇸 AS32771199.247.153.0/24 Vultr Customer Route}
NS	`ns3.dnsimple.com` ⚠️ Not in zone NS records
		A	2400:cb00:2049:1::a29f:1a04^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns3.dnsimple.com`
		A	162.159.26.4^{Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns3.dnsimple.com`
NS	`ns4.dnsimple.com` ⚠️ Not in zone NS records
		A	2620:111:8007::53^{🇺🇸 AS327712620:111:8007::/48 Vultr Customer Route}
		A	199.247.155.53^{🇺🇸 AS32771199.247.155.0/24 Vultr Customer Route}

`us`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.cctld.us` ⭐
	NS	`b.cctld.us`
	NS	`f.cctld.us`
	NS	`k.cctld.us`
	NS	`m.cctld.us`
	NS	`n.cctld.us`
	NS	`w.cctld.us`
	NS	`x.cctld.us`
	NS	`y.cctld.us`
	SOA	`a.cctld.us`admin@tldns.godaddy serial=1774450536

Same first word

criticalstart.io

criticalstart.us

criticalstart.net

criticalstart.com

DNS History

9 records (4 active, 5 former)

●NSns1.dnsimple.com2026-03-24 → 2026-03-25 · 3 obs

○ 2016-12-18 17:44:56
● 2026-03-24 16:47:20
● 2026-03-25 15:06:10

●NSns2.dnsimple.com2026-03-24 → 2026-03-25 · 3 obs

○ 2016-12-18 17:44:56
● 2026-03-24 16:47:20
● 2026-03-25 15:06:10

●NSns3.dnsimple.com2026-03-24 → 2026-03-25 · 3 obs

○ 2016-12-18 17:44:56
● 2026-03-24 16:47:20
● 2026-03-25 15:06:10

●NSns4.dnsimple.com2026-03-24 → 2026-03-25 · 3 obs

○ 2016-12-18 17:44:56
● 2026-03-24 16:47:20
● 2026-03-25 15:06:10

○NSns63.domaincontrol.com2015-07-14 → 2016-12-18 · 4 obs

● 2015-07-14 10:32:22
● 2016-12-18 17:44:56
○ 2026-03-24 16:47:20
○ 2026-03-25 15:06:10

○NSns64.domaincontrol.com2015-07-14 → 2016-12-18 · 4 obs

● 2015-07-14 10:32:22
● 2016-12-18 17:44:56
○ 2026-03-24 16:47:20
○ 2026-03-25 15:06:10

○MXmailstore1.secureserver.net2015-07-14 → 2016-12-18 · 4 obs

● 2015-07-14 10:32:22
● 2016-12-18 17:44:56
○ 2026-03-24 16:47:20
○ 2026-03-25 15:06:10

○MXsmtp.secureserver.net2015-07-14 → 2016-12-18 · 4 obs

● 2015-07-14 10:32:22
● 2016-12-18 17:44:56
○ 2026-03-24 16:47:20
○ 2026-03-25 15:06:10

○A216.172.190.1742015-07-14 → 2016-12-18 · 4 obs

● 2015-07-14 10:32:22
● 2016-12-18 17:44:56
○ 2026-03-24 16:47:20
○ 2026-03-25 15:06:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
us	w.cctld.us, f.cctld.us, m.cctld.us, y.cctld.us...	-
criticalstart.us	ns3.dnsimple.com, ns4.dnsimple.com, ns1.dnsimple.com, ns2.dnsimple.com	-

✅ Authoritative Response

Server:162.159.26.4

NS records: ns3.dnsimple.com, ns4.dnsimple.com, ns1.dnsimple.com, ns2.dnsimple.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for criticalstart.us (unsigned zone)

⏱️ Timing

Total: 245ms | Queries: -

📄 Records

Type	Count	Sample Data

Analysis

Name Servers

criticalstart.us is delegated to four name servers: ns1.dnsimple.com, ns2.dnsimple.com, ns3.dnsimple.com and ns4.dnsimple.com.

criticalstart.us at least partially shares name servers with other domains, for instance mccallabiblechurch.org, top100camp.com, gistcreate.com, thefirmconsulting.com and pushas.com.

These name servers are commonly used with ns4.dnsimple-edge.org and ns2.dnsimple-edge.net.

Host names with two IP numbers: ns1.dnsimple.com points to 2400:cb00:2049:1::a29f:1804 and 162.159.24.4; ns2.dnsimple.com points to 2620:111:8005::53 and 199.247.153.53; ns3.dnsimple.com points to 2400:cb00:2049:1::a29f:1a04 and 162.159.26.4; ns4.dnsimple.com points to 2620:111:8007::53 and 199.247.155.53.

criticalstart.us - robtex.com