`doubleletter.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:2c30^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::ac43:c315^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.44.48^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.195.21^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`drew.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3ba0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`drew.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1a0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`drew.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21a0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`drew.ns.cloudflare.com`
		A	108.162.193.160^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`drew.ns.cloudflare.com`
		A	172.64.33.160^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`drew.ns.cloudflare.com`
		A	173.245.59.160^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`drew.ns.cloudflare.com`
NS	`mona.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ace^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mona.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0ce^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mona.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20ce^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mona.ns.cloudflare.com`
		A	108.162.192.206^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mona.ns.cloudflare.com`
		A	172.64.32.206^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mona.ns.cloudflare.com`
		A	173.245.58.206^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mona.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.44.48, 172.67.195.21
		IPv6	2606:4700:3031::6815:2c30, 2606:4700:3031::ac43:c315
SOA	`drew.ns.cloudflare.com`dns@cloudflare.com serial=2399353534

`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=1774467067

Subdomains

ai.doubleletter.org

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, d0.org.afilias-nst.org, b2.org.afilias-nst.org	-
doubleletter.org	mona.ns.cloudflare.com, drew.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.160

NS records: mona.ns.cloudflare.com, drew.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for doubleletter.org (unsigned zone)

⏱️ Timing

Total: 125ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.195.21, 104.21.44.48`
AAAA	2	`2606:4700:3031::ac43:c315, 2606:4700:3031::6815:2c30`
NS	2	`drew.ns.cloudflare.com, mona.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`drew.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

The parent of ai.doubleletter.org is doubleletter.org.

IP Addresses

doubleletter.org maps to four IP numbers: 2606:4700:3031::6815:2c30, 2606:4700:3031::ac43:c315, 104.21.44.48 and 172.67.195.21.

other host names include tensational.com, 6559444.com, detlef-drews.de, ato4.com and bff(0x787878).com; they share IP numbers with doubleletter.org.

Name Servers

Two name servers drew.ns.cloudflare.com and mona.ns.cloudflare.com handle the delegation for doubleletter.org.

doubleletter.org shares the same name server setup as other domains, for instance automarekbis.com, arma.pl, kongresagrobiznesu.pl, asthmaabc.cf and alpinista.szczecin.pl.

doubleletter.org at least partially shares name servers with other domains, for instance sgbusinesshosting.com, noncompetereport.com, moretonislandfishingcharters.com.au, r2tlc.com and trianon.com.ar.

These name servers are commonly used alongside harley.ns.cloudflare.com.

Six IP addresses per host:

drew.ns.cloudflare.com points to 2606:4700:58::adf5:3ba0, 2803:f800:50::6ca2:c1a0, 2a06:98c1:50::ac40:21a0, 108.162.193.160, 172.64.33.160 and 173.245.59.160; mona.ns.cloudflare.com points to 2606:4700:50::adf5:3ace, 2803:f800:50::6ca2:c0ce, 2a06:98c1:50::ac40:20ce, 108.162.192.206, 172.64.32.206 and 173.245.58.206

doubleletter.org - robtex.com

doubleletter.org

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