`foundersbook.co`

DNSSEC	⚠️ Not signed
A	76.76.21.21^{🇺🇸 Amazon76.76.21.0/24 EC2 Prefix}
NS	`dns1.registrar-servers.com` ⭐
		A	2610:a1:1024::200^{🇺🇸 MAINT-ID-120082610:a1:1024::/48 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
		A	156.154.132.200^{🇺🇸 MAINT-ID-12008156.154.132.0/24 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
NS	`dns2.registrar-servers.com`
		A	2610:a1:1025::200^{🇺🇸 MAINT-ID-120082610:a1:1025::/48 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
		A	156.154.133.200^{🇺🇸 MAINT-ID-12008156.154.133.0/24 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4023:c06::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`dz-in-f27.1e100.net`
		A	142.251.2.26^{🇺🇸 Google142.251.2.0/24}
			PTR	`dl-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:1015::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yudfwta-in-f26.1e100.net`
		A	172.253.135.26^{🇺🇸 Google172.253.135.0/24}
			PTR	`yudfwta-in-f26.1e100.net`
MX	`aspmx2.googlemail.com`⁽¹⁰⁾
		A	2607:f8b0:4023:3003::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yulnkjt-in-f26.1e100.net`
		A	172.253.145.26^{🇺🇸 Google172.253.145.0/24}
			PTR	`yulnkjt-in-f26.1e100.net`
MX	`aspmx3.googlemail.com`⁽¹⁰⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
TXT	`v=spf1 include:_spf.google.com ~all`
TXT	`google-site-verification=lcZBml0yzqnzd1i-oJxjvG2JaKayghNivhY_DYpRcjg`
SOA	`dns1.registrar-servers.com`hostmaster@registrar-servers.com serial=1689131948

`co`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.registrydns.co`
	NS	`b.registrydns.co`
	NS	`c.registrydns.co`
	NS	`d.registrydns.co`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1759655654

Same first word

foundersbook.co

DNS History

8 records (8 active, 0 former)

●NSdns1.registrar-servers.com2026-05-03 → 2026-05-11 · 2 obs

● 2026-05-03 15:10:58
● 2026-05-11 19:32:50

●NSdns2.registrar-servers.com2026-05-03 → 2026-05-11 · 2 obs

● 2026-05-03 15:10:58
● 2026-05-11 19:32:50

●MXalt1.aspmx.l.google.com2026-05-03 → 2026-05-11 · 2 obs

● 2026-05-03 15:10:58
● 2026-05-11 19:32:50

●MXalt2.aspmx.l.google.com2026-05-03 → 2026-05-11 · 2 obs

● 2026-05-03 15:10:58
● 2026-05-11 19:32:50

●MXaspmx.l.google.com2026-05-03 → 2026-05-11 · 2 obs

● 2026-05-03 15:10:58
● 2026-05-11 19:32:50

●MXaspmx2.googlemail.com2026-05-03 → 2026-05-11 · 2 obs

● 2026-05-03 15:10:58
● 2026-05-11 19:32:50

●MXaspmx3.googlemail.com2026-05-03 → 2026-05-11 · 2 obs

● 2026-05-03 15:10:58
● 2026-05-11 19:32:50

●A76.76.21.212026-05-03 → 2026-05-11 · 2 obs

● 2026-05-03 15:10:58
● 2026-05-11 19:32:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co	c.registrydns.co, b.registrydns.co, d.registrydns.co, a.registrydns.co	-
foundersbook.co	dns1.registrar-servers.com, dns2.registrar-servers.com	-

✅ Authoritative Response

Server:156.154.132.200

NS records: dns1.registrar-servers.com, dns2.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for foundersbook.co (unsigned zone)

⏱️ Timing

Total: 904ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`76.76.21.21`
NS	2	`dns1.registrar-servers.com, dns2.registrar-servers.com`
MX	5	`aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)...`
TXT	2	`v=spf1 include:_spf.google.com ~all, google-site-verification=lcZBml0yzqnzd1i`
SOA	1	`dns1.registrar-servers.com hostmaster.re`

Analysis

IP Addresses

foundersbook.co resolves to a single IP: 76.76.21.21.

Other host names, for instance carjager.com, bindras.com, maideo.fr, deltree.com and www.brain1.com share IP numbers with foundersbook.co.

Name Servers

foundersbook.co has two name servers: dns1.registrar-servers.com and dns2.registrar-servers.com.

foundersbook.co shares the same name server setup as other domains, for example forcevitamins.com, valeriab.com, aptllp.com, proplink.net and evanjoss.com.