`firstclasscheckin.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:2675^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:de94^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.38.117^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.222.148^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`hans.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3baf^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hans.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1af^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hans.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21af^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hans.ns.cloudflare.com`
		A	108.162.193.175^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hans.ns.cloudflare.com`
		A	172.64.33.175^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hans.ns.cloudflare.com`
		A	173.245.59.175^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hans.ns.cloudflare.com`
NS	`tessa.ns.cloudflare.com`
		A	2606:4700:50::a29f:26e5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tessa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2e5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tessa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22e5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tessa.ns.cloudflare.com`
		A	108.162.194.229^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tessa.ns.cloudflare.com`
		A	162.159.38.229^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tessa.ns.cloudflare.com`
		A	172.64.34.229^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tessa.ns.cloudflare.com`
TXT	`34eba114bb420bebc3d231e9d049e1dc182c1ed6`
TXT	`474bffab22994988a9a8f6d944d54c3b`
TXT	`afternic-verification-33eanr3ea7Ney4dnkby8nu`
TXT	`d2a9aa54-4f09-4770-a627-f3a71b0c20b0`
TXT	`f3fe310ef620325864ee4a3ebe35ef42230e8efa`
TXT	`google-site-verification=Q-A9GQuzs02Yk_3nHAqE1od8_gqBcUfLAB77yhbpTWs`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.38.117, 172.67.222.148
		IPv6	2606:4700:3033::6815:2675, 2606:4700:3036::ac43:de94
SOA	`hans.ns.cloudflare.com`dns@cloudflare.com serial=2398894838

`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=1771291435

Same first word

firstclasscheckin.com

DNS History

11 records (6 active, 5 former)

●NShans.ns.cloudflare.com2026-03-20 → 2026-03-24 · 3 obs

○ 2016-09-23 12:01:54
● 2026-03-20 03:35:32
● 2026-03-24 02:37:54

○NSns75.domaincontrol.com2015-06-03 → 2016-04-03 · 4 obs

● 2015-06-03 03:07:14
● 2016-04-03 08:36:04
○ 2016-09-23 12:01:54
○ 2026-03-24 02:37:54

○NSns76.domaincontrol.com2015-06-03 → 2016-04-03 · 4 obs

● 2015-06-03 03:07:14
● 2016-04-03 08:36:04
○ 2016-09-23 12:01:54
○ 2026-03-24 02:37:54

●NStessa.ns.cloudflare.com2026-03-20 → 2026-03-24 · 3 obs

○ 2016-09-23 12:01:54
● 2026-03-20 03:35:32
● 2026-03-24 02:37:54

○MXmailstore1.secureserver.net2015-06-03 → 2016-04-03 · 4 obs

● 2015-06-03 03:07:14
● 2016-04-03 08:36:04
○ 2016-09-23 12:01:54
○ 2026-03-24 02:37:54

○MXsmtp.secureserver.net2015-06-03 → 2016-04-03 · 4 obs

● 2015-06-03 03:07:14
● 2016-04-03 08:36:04
○ 2016-09-23 12:01:54
○ 2026-03-24 02:37:54

●A104.21.38.1172026-03-20 → 2026-03-24 · 3 obs

○ 2016-09-23 12:01:54
● 2026-03-20 03:35:32
● 2026-03-24 02:37:54

●A172.67.222.1482026-03-20 → 2026-03-24 · 3 obs

○ 2016-09-23 12:01:54
● 2026-03-20 03:35:32
● 2026-03-24 02:37:54

○A184.168.221.362015-06-03 → 2016-04-03 · 4 obs

● 2015-06-03 03:07:14
● 2016-04-03 08:36:04
○ 2016-09-23 12:01:54
○ 2026-03-24 02:37:54

●A2606:4700:3033::6815:26752026-03-20 → 2026-03-24 · 3 obs

○ 2016-09-23 12:01:54
● 2026-03-20 03:35:32
● 2026-03-24 02:37:54

●A2606:4700:3036::ac43:de942026-03-20 → 2026-03-24 · 3 obs

○ 2016-09-23 12:01:54
● 2026-03-20 03:35:32
● 2026-03-24 02:37:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, k.gtld-servers.net, d.gtld-servers.net, g.gtld-servers.net...	-
firstclasscheckin.com	hans.ns.cloudflare.com, tessa.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.175

NS records: hans.ns.cloudflare.com, tessa.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstclasscheckin.com (unsigned zone)

⏱️ Timing

Total: 321ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.222.148, 104.21.38.117`
AAAA	2	`2606:4700:3036::ac43:de94, 2606:4700:3033::6815:2675`
NS	2	`hans.ns.cloudflare.com, tessa.ns.cloudflare.com`
TXT	6	`34eba114bb420bebc3d231e9d049e1dc182c1ed6, 474bffab22994988a9a8f6d944d54c3b...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`hans.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (hans.ns.cloudflare.com, hans.ns.cloudflare.com, hans.ns.cloudflare.com...)

Analysis

IP Addresses

firstclasscheckin.com points to four IP numbers: 2606:4700:3033::6815:2675, 2606:4700:3036::ac43:de94, 104.21.38.117 and 172.67.222.148.

Other host names, for instance aminyt.shmi.workers.dev, thaiyazaki-electricwire.co.th, kit114.net, 5540.mmbox.com.tw and ennichi.org share IP numbers with firstclasscheckin.com.

Name Servers

Delegation for firstclasscheckin.com rests with two name servers, hans.ns.cloudflare.com and tessa.ns.cloudflare.com.

firstclasscheckin.com shares the same name server setup as other domains, including toolazyfortrafficschool.com, giochionline.org, hrb7rvx.com, notredamedefatima.org and spokenwordchurch.org.

firstclasscheckin.com at least partially shares name servers with other domains, for instance topicased.shop, cqmkl.com, naturesgold.com.au, tsmlj.cc and lhvz.cn.

These name servers are commonly used with brenda.ns.cloudflare.com and fattouche.ns.cloudflare.com.

Host names with six IP numbers: hans.ns.cloudflare.com points to: 2606:4700:58::adf5:3baf, 2803:f800:50::6ca2:c1af, 2a06:98c1:50::ac40:21af, 108.162.193.175, 172.64.33.175 and 173.245.59.175. tessa.ns.cloudflare.com points to: 2606:4700:50::a29f:26e5, 2803:f800:50::6ca2:c2e5, 2a06:98c1:50::ac40:22e5, 108.162.194.229, 162.159.38.229 and 172.64.34.229.

firstclasscheckin.com - robtex.com