`letterblocks.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3037::6815:2b9f^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:b52f^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.43.159^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.181.47^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`asa.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3af6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`asa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0f6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`asa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20f6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`asa.ns.cloudflare.com`
		A	108.162.192.246^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`asa.ns.cloudflare.com`
		A	172.64.32.246^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`asa.ns.cloudflare.com`
		A	173.245.58.246^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`asa.ns.cloudflare.com`
NS	`derek.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b9a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c19a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`derek.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:219a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`derek.ns.cloudflare.com`
		A	108.162.193.154^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
		A	172.64.33.154^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
		A	173.245.59.154^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.43.159, 172.67.181.47
		IPv6 hints	2606:4700:3037::6815:2b9f, 2606:4700:3037::ac43:b52f
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=94, name=cloudflare-ech.com
SOA	`asa.ns.cloudflare.com`dns@cloudflare.com serial=2408650685

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1784815402

Same first word

letterblocks.org

Similar names

bllockstreet.lat

DNS History

10 records (6 active, 4 former)

●NSasa.ns.cloudflare.com2026-05-17 → 2026-07-23 · 2 obs

● 2026-05-17 05:02:46
● 2026-07-23 14:27:24

●NSderek.ns.cloudflare.com2026-05-17 → 2026-07-23 · 2 obs

● 2026-05-17 05:02:46
● 2026-07-23 14:27:24

●A104.21.43.1592026-07-23 → 2026-07-23 · 3 obs

○ 2026-05-17 05:02:46
● 2026-07-23 14:27:22
● 2026-07-23 14:27:24

●A172.67.181.472026-07-23 → 2026-07-23 · 3 obs

○ 2026-05-17 05:02:46
● 2026-07-23 14:27:22
● 2026-07-23 14:27:24

○A188.114.96.02026-05-17 → 2026-05-17 · 3 obs

● 2026-05-17 05:02:46
○ 2026-07-23 14:27:22
○ 2026-07-23 14:27:24

○A188.114.97.02026-05-17 → 2026-05-17 · 3 obs

● 2026-05-17 05:02:46
○ 2026-07-23 14:27:22
○ 2026-07-23 14:27:24

●A2606:4700:3037::6815:2b9f2026-07-23 → 2026-07-23 · 3 obs

○ 2026-05-17 05:02:46
● 2026-07-23 14:27:22
● 2026-07-23 14:27:24

●A2606:4700:3037::ac43:b52f2026-07-23 → 2026-07-23 · 3 obs

○ 2026-05-17 05:02:46
● 2026-07-23 14:27:22
● 2026-07-23 14:27:24

○A2a06:98c1:3120::2026-05-17 → 2026-05-17 · 3 obs

● 2026-05-17 05:02:46
○ 2026-07-23 14:27:22
○ 2026-07-23 14:27:24

○A2a06:98c1:3121::2026-05-17 → 2026-05-17 · 3 obs

● 2026-05-17 05:02:46
○ 2026-07-23 14:27:22
○ 2026-07-23 14:27:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
letterblocks.org	derek.ns.cloudflare.com, asa.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.246

NS records: derek.ns.cloudflare.com, asa.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for letterblocks.org (unsigned zone)

⏱️ Timing

Total: 2177ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.181.47, 104.21.43.159`
AAAA	2	`2606:4700:3037::6815:2b9f, 2606:4700:3037::ac43:b52f`
NS	2	`asa.ns.cloudflare.com, derek.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`asa.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

letterblocks.org has four IP addresses: 104.21.43.159, 172.67.181.47, 2606:4700:3037::6815:2b9f and 2606:4700:3037::ac43:b52f.

Two other host names, along with h-appy-metal.de, cash.help and peen-code-ou.digital, also share IP numbers with letterblocks.org.

Name Servers

The NS records for letterblocks.org delegate to asa.ns.cloudflare.com and derek.ns.cloudflare.com.

letterblocks.org shares its NS records with other domains, for example desa55naik.com, duniabagus.com, grandchapiteautickets.com and two others.

letterblocks.org has at least partial name server overlap with other domains, such as gehring.biz, jcgrand.com.tw, granlusso.com and two others.

DNS names with 6 IP addresses:

asa.ns.cloudflare.com maps to 108.162.192.246, 172.64.32.246, 173.245.58.246 and 3 additional IP addresses.

derek.ns.cloudflare.com maps to 108.162.193.154, 172.64.33.154, 173.245.59.154 and 3 additional IP addresses.

letterblocks.org - robtex.com