🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`rubyconcurrency.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:3a91^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::ac43:a05f^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.58.145^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.160.95^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`daisy.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a5a^{Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	2803:f800:50::6ca2:c05a^{Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
		A	2a06:98c1:50::ac40:205a^{Cloudflare2a06:98c1:50::/45}
		A	108.162.192.90^{Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.32.90^{Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	173.245.58.90^{Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`dale.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b5f^{Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	2803:f800:50::6ca2:c15f^{Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
		A	2a06:98c1:50::ac40:215f^{Cloudflare2a06:98c1:50::/45}
		A	108.162.193.95^{Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.33.95^{Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	173.245.59.95^{Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.58.145, 172.67.160.95
		IPv6 hints	2606:4700:3031::6815:3a91, 2606:4700:3032::ac43:a05f
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=194, name=cloudflare-ech.com
SOA	`daisy.ns.cloudflare.com`dns@cloudflare.com serial=2413683427

`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=1791181304

Same first word

rubyconcurrency.com

Previous names

Next names

DNS History

10 records (6 active, 4 former)

●NSdaisy.ns.cloudflare.com2026-09-04 → 2026-10-05 · 2 obs

● 2026-09-04 22:52:46
● 2026-10-05 06:41:52

●NSdale.ns.cloudflare.com2026-09-04 → 2026-10-05 · 2 obs

● 2026-09-04 22:52:46
● 2026-10-05 06:41:52

●A104.21.58.1452026-09-05 → 2026-10-05 · 3 obs

○ 2026-09-04 22:52:46
● 2026-09-05 11:24:02
● 2026-10-05 06:41:52

●A172.67.160.952026-09-05 → 2026-10-05 · 3 obs

○ 2026-09-04 22:52:46
● 2026-09-05 11:24:02
● 2026-10-05 06:41:52

○A188.114.96.02026-09-04 → 2026-09-04 · 3 obs

● 2026-09-04 22:52:46
○ 2026-09-05 11:24:02
○ 2026-10-05 06:41:52

○A188.114.97.02026-09-04 → 2026-09-04 · 3 obs

● 2026-09-04 22:52:46
○ 2026-09-05 11:24:02
○ 2026-10-05 06:41:52

●A2606:4700:3031::6815:3a912026-09-05 → 2026-10-05 · 3 obs

○ 2026-09-04 22:52:46
● 2026-09-05 11:24:02
● 2026-10-05 06:41:52

●A2606:4700:3032::ac43:a05f2026-09-05 → 2026-10-05 · 3 obs

○ 2026-09-04 22:52:46
● 2026-09-05 11:24:02
● 2026-10-05 06:41:52

○A2a06:98c1:3120::2026-09-04 → 2026-09-04 · 3 obs

● 2026-09-04 22:52:46
○ 2026-09-05 11:24:02
○ 2026-10-05 06:41:52

○A2a06:98c1:3121::2026-09-04 → 2026-09-04 · 3 obs

● 2026-09-04 22:52:46
○ 2026-09-05 11:24:02
○ 2026-10-05 06:41:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net, b.gtld-servers.net...	-
rubyconcurrency.com	dale.ns.cloudflare.com, daisy.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.90

NS records: dale.ns.cloudflare.com, daisy.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rubyconcurrency.com (unsigned zone)

⏱️ Timing

Total: 676ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.160.95, 104.21.58.145`
AAAA	2	`2606:4700:3031::6815:3a91, 2606:4700:3032::ac43:a05f`
NS	2	`daisy.ns.cloudflare.com, dale.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`daisy.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

rubyconcurrency.com points to the four IP addresses 104.21.58.145, 172.67.160.95, 2606:4700:3031::6815:3a91 and 2606:4700:3032::ac43:a05f.

Among the host names that share IP numbers with rubyconcurrency.com are www.maitechnology.com, friendlyfarmscartsofficial.com, voyagecurators.xyz and two others.

Name Servers

rubyconcurrency.com uses two name servers for its delegation: daisy.ns.cloudflare.com and dale.ns.cloudflare.com.

rubyconcurrency.com has the same name server delegation as a number of other domains, such as 2040925201.workers.dev, creatorbilling.com, watermarkinvoice.com and two more.

There is at least partial name server overlap between rubyconcurrency.com and other domains — tuana.com.br, bsky-low-data.pages.dev, luckyonesdoubles.com and two more among them.

These name servers are routinely co-deployed with the name servers hal.ns.cloudflare.com, fred.ns.cloudflare.com, chelsea.ns.cloudflare.com and two others.

Host names resolving to 6 IP numbers:

Hostname daisy.ns.cloudflare.com directs to 108.162.192.90, 172.64.32.90 and 173.245.58.90 along with 3 other IP addresses.

Hostname dale.ns.cloudflare.com directs to 108.162.193.95, 172.64.33.95 and 173.245.59.95 along with 3 other IP addresses.

rubyconcurrency.com - robtex.com