`programmingcourse.site`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:a91e^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:1b6a^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.27.106^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.169.30^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`tom.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b93^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c193^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tom.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2193^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tom.ns.cloudflare.com`
		A	108.162.193.147^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
		A	172.64.33.147^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
		A	173.245.59.147^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
NS	`vita.ns.cloudflare.com`
		A	2606:4700:50::adf5:3aee^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vita.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0ee^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`vita.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20ee^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`vita.ns.cloudflare.com`
		A	108.162.192.238^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vita.ns.cloudflare.com`
		A	172.64.32.238^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vita.ns.cloudflare.com`
		A	173.245.58.238^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vita.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.27.106, 172.67.169.30
		IPv6 hints	2606:4700:3030::ac43:a91e, 2606:4700:3037::6815:1b6a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=238, name=cloudflare-ech.com
SOA	`tom.ns.cloudflare.com`dns@cloudflare.com serial=2399179064

`site`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns01.trs-dns.com` ⭐
	NS	`ns.trs-dns.com`
	NS	`ns01.trs-dns.net`
	NS	`ns10.trs-dns.info`
	NS	`ns10.trs-dns.org`
	SOA	`ns.trs-dns.com`trs-ops@tucows.com serial=1776011954

⚠️ On DNS blocklist: tif

Same first word

programmingcourse.site

Similar names

programmingsource.net

DNS History

6 records (6 active, 0 former)

●NStom.ns.cloudflare.com2026-03-28 → 2026-04-12 · 2 obs

● 2026-03-28 21:29:48
● 2026-04-12 17:12:10

●NSvita.ns.cloudflare.com2026-03-28 → 2026-04-12 · 2 obs

● 2026-03-28 21:29:48
● 2026-04-12 17:12:10

●A104.21.27.1062026-03-28 → 2026-04-12 · 2 obs

● 2026-03-28 21:29:48
● 2026-04-12 17:12:10

●A172.67.169.302026-03-28 → 2026-04-12 · 2 obs

● 2026-03-28 21:29:48
● 2026-04-12 17:12:10

●A2606:4700:3030::ac43:a91e2026-03-28 → 2026-04-12 · 2 obs

● 2026-03-28 21:29:48
● 2026-04-12 17:12:10

●A2606:4700:3037::6815:1b6a2026-03-28 → 2026-04-12 · 2 obs

● 2026-03-28 21:29:48
● 2026-04-12 17:12:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
site	ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org, ns10.trs-dns.info	-
programmingcourse.site	tom.ns.cloudflare.com, vita.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.147

NS records: tom.ns.cloudflare.com, vita.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for programmingcourse.site (unsigned zone)

⏱️ Timing

Total: 320ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.27.106, 172.67.169.30`
AAAA	2	`2606:4700:3030::ac43:a91e, 2606:4700:3037::6815:1b6a`
NS	2	`tom.ns.cloudflare.com, vita.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`tom.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

programmingcourse.site points to four IP numbers: 2606:4700:3030::ac43:a91e, 2606:4700:3037::6815:1b6a, 104.21.27.106 and 172.67.169.30.

Other host names including 21cwoman.com, zenithspherego.buzz, merdeka77main.click, slotupdate.us and christianschools.org.au share IP numbers with programmingcourse.site.

Name Servers

programmingcourse.site's delegation uses two name servers, tom.ns.cloudflare.com and vita.ns.cloudflare.com.

programmingcourse.site shares the same name server setup as other domains, for example handsofachild.com, pmearningplus.com, waeg.com, flowdoc.ru and menclub.lt.

programmingcourse.site at least partially shares name servers with other domains, including hubetubex.com, vancv.com, enpi-info.eu, teasme.co.nz and coder.band.

These name servers are commonly used with adelaide.ns.cloudflare.com and kia.ns.cloudflare.com.

Host names with six IP numbers:

tom.ns.cloudflare.com points to: 2606:4700:58::adf5:3b93, 2803:f800:50::6ca2:c193, 2a06:98c1:50::ac40:2193, 108.162.193.147, 172.64.33.147 and 173.245.59.147.

vita.ns.cloudflare.com points to: 2606:4700:50::adf5:3aee, 2803:f800:50::6ca2:c0ee, 2a06:98c1:50::ac40:20ee, 108.162.192.238, 172.64.32.238 and 173.245.58.238.

programmingcourse.site - robtex.com