`nationalchecknetwork.us`

DNSSEC	⚠️ Not signed
A	99.83.176.46^{🇺🇸 Amazon99.83.176.0/20}
		PTR	`a44fc39dcd01d2028.awsglobalaccelerator.com`
NS	`ns1.markmonitor.com` ⭐
		A	2620:10a:80a8::1^{🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.160.1^{🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns2.markmonitor.com`
		A	2001:67c:10b8::1^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns2.markmonitor.com`
		A	176.97.158.1^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns2.markmonitor.com`
NS	`ns3.markmonitor.com`
		A	2620:10a:80a9::1^{🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.161.1^{🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns4.markmonitor.com`
		A	2001:67c:1bc::1^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast}
			PTR	`ns1.markmonitor.com`
		A	192.174.68.1^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net}
TXT	`v=spf1 -all`
SOA	`ns1.markmonitor.com`hostmaster@markmonitor.com 2022-12-12 #1

`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=1776076828

Same first word

nationalchecknetwork.us

nationalchecknetwork.net

nationalchecknetwork.biz

nationalchecknetwork.ws

nationalchecknetwork.org

DNS History

5 records (5 active, 0 former)

●NSns1.markmonitor.com2026-04-11 → 2026-04-13 · 2 obs

● 2026-04-11 04:11:08
● 2026-04-13 11:06:36

●NSns2.markmonitor.com2026-04-11 → 2026-04-13 · 2 obs

● 2026-04-11 04:11:08
● 2026-04-13 11:06:36

●NSns3.markmonitor.com2026-04-11 → 2026-04-13 · 2 obs

● 2026-04-11 04:11:08
● 2026-04-13 11:06:36

●NSns4.markmonitor.com2026-04-11 → 2026-04-13 · 2 obs

● 2026-04-11 04:11:08
● 2026-04-13 11:06:36

●A99.83.176.462026-04-11 → 2026-04-13 · 2 obs

● 2026-04-11 04:11:08
● 2026-04-13 11:06:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
us	b.cctld.us, f.cctld.us, k.cctld.us, m.cctld.us...	-
nationalchecknetwork.us	ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com	-

✅ Authoritative Response

Server:149.112.161.1

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for nationalchecknetwork.us (unsigned zone)

⏱️ Timing

Total: 459ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`99.83.176.46`
NS	4	`ns2.markmonitor.com, ns3.markmonitor.com...`
TXT	1	`v=spf1 -all`
SOA	1	`ns1.markmonitor.com hostmaster.markmonit`

Analysis

IP Addresses

nationalchecknetwork.us points to a single IP number: 99.83.176.46.

Other host names, for instance pjtech.jp, mariecalendar.com, bhgrecommercial.com, bandainamcomusiclive.tw and alico.com.pt share IP numbers with nationalchecknetwork.us.

Name Servers

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

nationalchecknetwork.us shares name servers with other domains at least partially, for instance bwinnonthehillca.com, 1010winsnewsradio.com, uberfreight.com.ve, ruralspaces.com and ownerprogram.info.

these name servers are often used with ns5.markmonitor.com, ns6.markmonitor.com and ns7.markmonitor.com.

Host names with two IP numbers:

ns1.markmonitor.com resolves to 2620:10a:80a8::1 and 149.112.160.1.

ns2.markmonitor.com resolves to 2001:67c:10b8::1 and 176.97.158.1.

ns3.markmonitor.com resolves to 2620:10a:80a9::1 and 149.112.161.1.

ns4.markmonitor.com resolves to 2001:67c:1bc::1 and 192.174.68.1.

nationalchecknetwork.us - robtex.com