`contractorischool.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:97c0^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:58b4^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.88.180^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.151.192^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`adaline.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2631^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c231^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`adaline.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2231^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`adaline.ns.cloudflare.com`
		A	108.162.194.49^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
		A	162.159.38.49^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
		A	172.64.34.49^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
NS	`rajeev.ns.cloudflare.com`
		A	2606:4700:58::adf5:3be0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rajeev.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1e0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rajeev.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21e0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rajeev.ns.cloudflare.com`
		A	108.162.193.224^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rajeev.ns.cloudflare.com`
		A	172.64.33.224^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rajeev.ns.cloudflare.com`
		A	173.245.59.224^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rajeev.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.88.180, 172.67.151.192
		IPv6	2606:4700:3033::ac43:97c0, 2606:4700:3035::6815:58b4
SOA	`adaline.ns.cloudflare.com`dns@cloudflare.com serial=2398778592

`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

contractorischool.com

DNS History

13 records (6 active, 7 former)

●NSadaline.ns.cloudflare.com2026-02-25 → 2026-03-23 · 3 obs

○ 2017-06-03 17:12:00
● 2026-02-25 21:14:14
● 2026-03-23 20:32:52

○NSns0.contractorsintelligence.com2015-08-11 → 2017-06-03 · 4 obs

● 2015-08-11 15:06:10
● 2017-06-03 17:12:00
○ 2026-02-25 21:14:14
○ 2026-03-23 20:32:52

○NSns0.dnsmadeeasy.com2015-08-11 → 2017-06-03 · 4 obs

● 2015-08-11 15:06:10
● 2017-06-03 17:12:00
○ 2026-02-25 21:14:14
○ 2026-03-23 20:32:52

○NSns1.contractorsintelligence.com2015-08-11 → 2017-06-03 · 4 obs

● 2015-08-11 15:06:10
● 2017-06-03 17:12:00
○ 2026-02-25 21:14:14
○ 2026-03-23 20:32:52

○NSns2.contractorsintelligence.com2015-08-11 → 2017-06-03 · 4 obs

● 2015-08-11 15:06:10
● 2017-06-03 17:12:00
○ 2026-02-25 21:14:14
○ 2026-03-23 20:32:52

●NSrajeev.ns.cloudflare.com2026-02-25 → 2026-03-23 · 3 obs

○ 2017-06-03 17:12:00
● 2026-02-25 21:14:14
● 2026-03-23 20:32:52

○MXmail.contractorischool.com2015-08-11 → 2017-06-03 · 4 obs

● 2015-08-11 15:06:10
● 2017-06-03 17:12:00
○ 2026-02-25 21:14:14
○ 2026-03-23 20:32:52

●A104.21.88.1802026-02-25 → 2026-03-23 · 3 obs

○ 2017-06-03 17:12:00
● 2026-02-25 21:14:14
● 2026-03-23 20:32:52

○A162.144.115.2352015-08-11 → 2015-08-11 · 3 obs

● 2015-08-11 15:06:10
○ 2016-01-14 23:09:34
○ 2026-03-23 20:32:52

●A172.67.151.1922026-02-25 → 2026-03-23 · 3 obs

○ 2017-06-03 17:12:00
● 2026-02-25 21:14:14
● 2026-03-23 20:32:52

●A2606:4700:3033::ac43:97c02026-02-25 → 2026-03-23 · 3 obs

○ 2017-06-03 17:12:00
● 2026-02-25 21:14:14
● 2026-03-23 20:32:52

●A2606:4700:3035::6815:58b42026-02-25 → 2026-03-23 · 3 obs

○ 2017-06-03 17:12:00
● 2026-02-25 21:14:14
● 2026-03-23 20:32:52

○A62.151.182.952016-01-14 → 2017-06-03 · 5 obs

○ 2015-08-11 15:06:10
● 2016-01-14 23:09:34
● 2017-06-03 17:12:00
○ 2026-02-25 21:14:14
○ 2026-03-23 20:32:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, c.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net...	-
contractorischool.com	rajeev.ns.cloudflare.com, adaline.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.224

NS records: rajeev.ns.cloudflare.com, adaline.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for contractorischool.com (unsigned zone)

⏱️ Timing

Total: 169ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.151.192, 104.21.88.180`
AAAA	2	`2606:4700:3035::6815:58b4, 2606:4700:3033::ac43:97c0`
NS	2	`adaline.ns.cloudflare.com, rajeev.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`adaline.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

contractorischool.com resolves to four IP numbers: 2606:4700:3033::ac43:97c0, 2606:4700:3035::6815:58b4, 104.21.88.180 and 172.67.151.192.

other host names for instance www.sullivanauctioneers.com, vatticn.com, bc64a28bdd14f.shop, mail.campusgirls.pl and www.amosehe.top share IP numbers with contractorischool.com.

Name Servers

contractorischool.com is delegated to two name servers: adaline.ns.cloudflare.com and rajeev.ns.cloudflare.com.

contractorischool.com shares the same name server setup as other domains, for example carstimate.com, contractors.school, microforce.biz, tamer.cl and contractorsintelligence.com.

contractorischool.com at least partially shares name servers with other domains, for instance coinupig.com, aa123xx.com, hg8228.cc, healthyhappylife.com and jackpotfeedhub.us.

These name servers are commonly used alongside the name servers sreeni.ns.cloudflare.com, robert.ns.cloudflare.com, greg.ns.cloudflare.com, logan.ns.cloudflare.com and dawn.ns.cloudflare.com.

Host names with six IP numbers:

adaline.ns.cloudflare.com points to: 2606:4700:50::a29f:2631, 2803:f800:50::6ca2:c231, 2a06:98c1:50::ac40:2231, 108.162.194.49, 162.159.38.49 and 172.64.34.49; rajeev.ns.cloudflare.com points to: 2606:4700:58::adf5:3be0, 2803:f800:50::6ca2:c1e0, 2a06:98c1:50::ac40:21e0, 108.162.193.224, 172.64.33.224 and 173.245.59.224.

contractorischool.com - robtex.com