`skillbuilderworld.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:56b7^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:df7d^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.86.183^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.223.125^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`chuck.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b56^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`chuck.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c156^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`chuck.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2156^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`chuck.ns.cloudflare.com`
		A	108.162.193.86^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`chuck.ns.cloudflare.com`
		A	172.64.33.86^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`chuck.ns.cloudflare.com`
		A	173.245.59.86^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`chuck.ns.cloudflare.com`
NS	`raina.ns.cloudflare.com`
		A	2606:4700:50::a29f:26f1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`raina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2f1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`raina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22f1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`raina.ns.cloudflare.com`
		A	108.162.194.241^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`raina.ns.cloudflare.com`
		A	162.159.38.241^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`raina.ns.cloudflare.com`
		A	172.64.34.241^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`raina.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.86.183, 172.67.223.125
		IPv6	2606:4700:3030::6815:56b7, 2606:4700:3033::ac43:df7d
SOA	`chuck.ns.cloudflare.com`dns@cloudflare.com serial=2399542274

`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

⚠️ On DNS blocklist: tif

Same first word

skillbuilderworld.com

DNS History

6 records (6 active, 0 former)

●NSchuck.ns.cloudflare.com2026-03-21 → 2026-03-22 · 2 obs

● 2026-03-21 12:36:52
● 2026-03-22 01:38:36

●NSraina.ns.cloudflare.com2026-03-21 → 2026-03-22 · 2 obs

● 2026-03-21 12:36:52
● 2026-03-22 01:38:36

●A104.21.86.1832026-03-21 → 2026-03-22 · 2 obs

● 2026-03-21 12:36:52
● 2026-03-22 01:38:36

●A172.67.223.1252026-03-21 → 2026-03-22 · 2 obs

● 2026-03-21 12:36:52
● 2026-03-22 01:38:36

●A2606:4700:3030::6815:56b72026-03-21 → 2026-03-22 · 2 obs

● 2026-03-21 12:36:52
● 2026-03-22 01:38:36

●A2606:4700:3033::ac43:df7d2026-03-21 → 2026-03-22 · 2 obs

● 2026-03-21 12:36:52
● 2026-03-22 01:38:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net...	-
skillbuilderworld.com	chuck.ns.cloudflare.com, raina.ns.cloudflare.com	12 records

✅ Authoritative Response

Server: 172.64.33.86

NS records: chuck.ns.cloudflare.com, raina.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for skillbuilderworld.com (unsigned zone)

⏱️ Timing

Total: 342ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.86.183, 172.67.223.125`
AAAA	2	`2606:4700:3030::6815:56b7, 2606:4700:3033::ac43:df7d`
NS	2	`chuck.ns.cloudflare.com, raina.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`chuck.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

Four IP numbers are pointed to by skillbuilderworld.com: 2606:4700:3030::6815:56b7, 2606:4700:3033::ac43:df7d, 104.21.86.183 and 172.67.223.125.

other host names including cload.com.my, milanoblog.it, jmfproperties.com, mail.shumyip.com and freshgaz.ru share IP numbers with skillbuilderworld.com.

Name Servers

skillbuilderworld.com is delegated to two name servers chuck.ns.cloudflare.com and raina.ns.cloudflare.com.

skillbuilderworld.com shares the same name server setup as other domains, for instance cpfgerador.com.br, eduelevatezone.com, eduskillzone.com, mark.lviv.ua and cosanostra-cloud.de.

skillbuilderworld.com at least partially shares name servers with other domains, for instance fortunemine.org, ontariopaper.com, galicys.cl, left-left.com and sunguardglass.sk.

these name servers are commonly used alongside michael.ns.cloudflare.com.

Host names with six IP numbers:

Host name chuck.ns.cloudflare.com points to: 2606:4700:58::adf5:3b56, 2803:f800:50::6ca2:c156, 2a06:98c1:50::ac40:2156, 108.162.193.86, 172.64.33.86 and 173.245.59.86.

Host name raina.ns.cloudflare.com points to: 2606:4700:50::a29f:26f1, 2803:f800:50::6ca2:c2f1, 2a06:98c1:50::ac40:22f1, 108.162.194.241, 162.159.38.241 and 172.64.34.241.

skillbuilderworld.com - robtex.com