`stackdoubleflow.net`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:8e5a^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:574b^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.87.75^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.142.90^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`liz.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3abd^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liz.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0bd^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`liz.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20bd^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`liz.ns.cloudflare.com`
		A	108.162.192.189^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liz.ns.cloudflare.com`
		A	172.64.32.189^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liz.ns.cloudflare.com`
		A	173.245.58.189^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liz.ns.cloudflare.com`
NS	`lynn.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bc9^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lynn.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1c9^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lynn.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21c9^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lynn.ns.cloudflare.com`
		A	108.162.193.201^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lynn.ns.cloudflare.com`
		A	172.64.33.201^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lynn.ns.cloudflare.com`
		A	173.245.59.201^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lynn.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.87.75, 172.67.142.90
		IPv6	2606:4700:3031::ac43:8e5a, 2606:4700:3036::6815:574b
SOA	`liz.ns.cloudflare.com`dns@cloudflare.com serial=2398493982

`net`

	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=1771291465

Same first word

stackdoubleflow.net

DNS History

6 records (6 active, 0 former)

●NSliz.ns.cloudflare.com2026-02-27 → 2026-03-21 · 2 obs

● 2026-02-27 15:05:02
● 2026-03-21 22:45:30

●NSlynn.ns.cloudflare.com2026-02-27 → 2026-03-21 · 2 obs

● 2026-02-27 15:05:02
● 2026-03-21 22:45:30

●A104.21.87.752026-02-27 → 2026-03-21 · 2 obs

● 2026-02-27 15:05:02
● 2026-03-21 22:45:30

●A172.67.142.902026-02-27 → 2026-03-21 · 2 obs

● 2026-02-27 15:05:02
● 2026-03-21 22:45:30

●A2606:4700:3031::ac43:8e5a2026-02-27 → 2026-03-21 · 2 obs

● 2026-02-27 15:05:02
● 2026-03-21 22:45:30

●A2606:4700:3036::6815:574b2026-02-27 → 2026-03-21 · 2 obs

● 2026-02-27 15:05:02
● 2026-03-21 22:45:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
stackdoubleflow.net	lynn.ns.cloudflare.com, liz.ns.cloudflare.com	-

✅ Authoritative Response

Server: 108.162.193.201

NS records: lynn.ns.cloudflare.com, liz.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stackdoubleflow.net (unsigned zone)

⏱️ Timing

Total: 499ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.142.90, 104.21.87.75`
AAAA	2	`2606:4700:3031::ac43:8e5a, 2606:4700:3036::6815:574b`
NS	2	`liz.ns.cloudflare.com, lynn.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`liz.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

Four IP numbers are pointed to by stackdoubleflow.net: 2606:4700:3031::ac43:8e5a, 2606:4700:3036::6815:574b, 104.21.87.75 and 172.67.142.90.

other host names including www.serranovagroup.com, causasdobem.com, www.npo.fi.cdn.cloudflare.net, www.51ckzx.com and largeleve.click share IP numbers with stackdoubleflow.net.

Name Servers

stackdoubleflow.net is delegated to two name servers liz.ns.cloudflare.com and lynn.ns.cloudflare.com.

stackdoubleflow.net shares the same name server setup as other domains, for instance sms16.ru, az(0x706f726e)o.net, tajikskoe.net, intis.ru and moneycredit.com.br.

stackdoubleflow.net at least partially shares name servers with other domains, for instance sgdtips.com, houseofjadeinteriors.com, royalbetharbor.com, instanthome.co.uk and asicdirect.com.

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

Host names with six IP numbers:

Host name liz.ns.cloudflare.com points to: 2606:4700:50::adf5:3abd, 2803:f800:50::6ca2:c0bd, 2a06:98c1:50::ac40:20bd, 108.162.192.189, 172.64.32.189 and 173.245.58.189.

Host name lynn.ns.cloudflare.com points to: 2606:4700:58::adf5:3bc9, 2803:f800:50::6ca2:c1c9, 2a06:98c1:50::ac40:21c9, 108.162.193.201, 172.64.33.201 and 173.245.59.201.

stackdoubleflow.net - robtex.com