`featureflagsbook.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:2cf9^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:ce99^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.44.249^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.206.153^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`kristin.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3ab5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kristin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0b5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kristin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20b5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kristin.ns.cloudflare.com`
		A	108.162.192.181^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kristin.ns.cloudflare.com`
		A	172.64.32.181^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kristin.ns.cloudflare.com`
		A	173.245.58.181^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kristin.ns.cloudflare.com`
NS	`rudy.ns.cloudflare.com`
		A	2606:4700:58::adf5:3be5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rudy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1e5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rudy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21e5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rudy.ns.cloudflare.com`
		A	108.162.193.229^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rudy.ns.cloudflare.com`
		A	172.64.33.229^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rudy.ns.cloudflare.com`
		A	173.245.59.229^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rudy.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.44.249, 172.67.206.153
		IPv6 hints	2606:4700:3032::6815:2cf9, 2606:4700:3037::ac43:ce99
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=84, name=cloudflare-ech.com
SOA	`kristin.ns.cloudflare.com`dns@cloudflare.com serial=2411029773

`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=1785595312

Same first word

featureflagsbook.com

DNS History

7 records (6 active, 1 former)

●NSkristin.ns.cloudflare.com2026-02-24 → 2026-08-01 · 2 obs

● 2026-02-24 17:00:38
● 2026-08-01 14:46:48

●NSrudy.ns.cloudflare.com2026-02-24 → 2026-08-01 · 2 obs

● 2026-02-24 17:00:38
● 2026-08-01 14:46:48

●A104.21.44.2492026-02-24 → 2026-08-01 · 2 obs

● 2026-02-24 17:00:38
● 2026-08-01 14:46:48

●A172.67.206.1532026-02-24 → 2026-08-01 · 2 obs

● 2026-02-24 17:00:38
● 2026-08-01 14:46:48

●A2606:4700:3032::6815:2cf92026-06-22 → 2026-08-01 · 3 obs

○ 2026-06-15 14:58:06
● 2026-06-22 13:12:22
● 2026-08-01 14:46:48

○A2606:4700:3036::6815:2cf92026-02-24 → 2026-06-15 · 4 obs

● 2026-02-24 17:00:38
● 2026-06-15 14:58:06
○ 2026-06-22 13:12:22
○ 2026-08-01 14:46:48

●A2606:4700:3037::ac43:ce992026-02-24 → 2026-08-01 · 2 obs

● 2026-02-24 17:00:38
● 2026-08-01 14:46:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
featureflagsbook.com	rudy.ns.cloudflare.com, kristin.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.229

NS records: rudy.ns.cloudflare.com, kristin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for featureflagsbook.com (unsigned zone)

⏱️ Timing

Total: 136ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.44.249, 172.67.206.153`
AAAA	2	`2606:4700:3032::6815:2cf9, 2606:4700:3037::ac43:ce99`
NS	2	`kristin.ns.cloudflare.com, rudy.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`kristin.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

featureflagsbook.com has four IP addresses: 104.21.44.249, 172.67.206.153, 2606:4700:3032::6815:2cf9 and 2606:4700:3037::ac43:ce99.

deardesigner.co.uk, nastynathan.com, seselkfj.xyz and two other host names share IP numbers with featureflagsbook.com.

Name Servers

DNS delegation for featureflagsbook.com points to two name servers: kristin.ns.cloudflare.com and rudy.ns.cloudflare.com.

featureflagsbook.com uses the same name servers as several other domains — among them getuncivilized.com, drannacooper.com, dicebag.com and two more.

featureflagsbook.com partially shares its NS delegation with several other domains, including saketos.fr, kaarsenlantaarn.nl, percik.or.id and two others.

These name servers are regularly seen alongside alan.ns.cloudflare.com and stanley.ns.cloudflare.com as name servers.

Hostnames that resolve to 6 IP addresses:

kristin.ns.cloudflare.com has IP addresses 108.162.192.181, 172.64.32.181 and 173.245.58.181, plus 3 other.

rudy.ns.cloudflare.com has IP addresses 108.162.193.229, 172.64.33.229 and 173.245.59.229, plus 3 other.

featureflagsbook.com - robtex.com