`guestcertify.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:5139^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:9d2a^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.81.57^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.157.42^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`autumn.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2694^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`autumn.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c294^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`autumn.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2294^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`autumn.ns.cloudflare.com`
		A	108.162.194.148^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`autumn.ns.cloudflare.com`
		A	162.159.38.148^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`autumn.ns.cloudflare.com`
		A	172.64.34.148^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`autumn.ns.cloudflare.com`
NS	`eric.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b70^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`eric.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c170^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`eric.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2170^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`eric.ns.cloudflare.com`
		A	108.162.193.112^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`eric.ns.cloudflare.com`
		A	172.64.33.112^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`eric.ns.cloudflare.com`
		A	173.245.59.112^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`eric.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.81.57, 172.67.157.42
		IPv6 hints	2606:4700:3031::6815:5139, 2606:4700:3036::ac43:9d2a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=206, name=cloudflare-ech.com
SOA	`autumn.ns.cloudflare.com`dns@cloudflare.com serial=2403574318

`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=1778369671

⚠️ On DNS blocklist: tif

Same first word

guestcertify.com

DNS History

8 records (6 active, 2 former)

●NSautumn.ns.cloudflare.com2026-05-09 → 2026-05-09 · 2 obs

○ 2026-05-01 03:12:28
● 2026-05-09 23:41:32

○NSdawn.ns.cloudflare.com2026-04-27 → 2026-05-01 · 3 obs

● 2026-04-27 05:00:08
● 2026-05-01 03:12:28
○ 2026-05-09 23:41:32

●NSeric.ns.cloudflare.com2026-05-09 → 2026-05-09 · 2 obs

○ 2026-05-01 03:12:28
● 2026-05-09 23:41:32

○NSmatt.ns.cloudflare.com2026-04-27 → 2026-05-01 · 3 obs

● 2026-04-27 05:00:08
● 2026-05-01 03:12:28
○ 2026-05-09 23:41:32

●A104.21.81.572026-04-27 → 2026-05-09 · 2 obs

● 2026-04-27 05:00:08
● 2026-05-09 23:41:32

●A172.67.157.422026-04-27 → 2026-05-09 · 2 obs

● 2026-04-27 05:00:08
● 2026-05-09 23:41:32

●A2606:4700:3031::6815:51392026-04-27 → 2026-05-09 · 2 obs

● 2026-04-27 05:00:08
● 2026-05-09 23:41:32

●A2606:4700:3036::ac43:9d2a2026-04-27 → 2026-05-09 · 2 obs

● 2026-04-27 05:00:08
● 2026-05-09 23:41:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net, m.gtld-servers.net...	-
guestcertify.com	eric.ns.cloudflare.com, autumn.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.112

NS records: eric.ns.cloudflare.com, autumn.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for guestcertify.com (unsigned zone)

⏱️ Timing

Total: 138ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.81.57, 172.67.157.42`
AAAA	2	`2606:4700:3031::6815:5139, 2606:4700:3036::ac43:9d2a`
NS	2	`autumn.ns.cloudflare.com, eric.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`autumn.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

guestcertify.com maps to four IP numbers: 2606:4700:3031::6815:5139, 2606:4700:3036::ac43:9d2a, 104.21.81.57 and 172.67.157.42.

Other host names, for instance mail1.van-esch.nl, www.undergroundcellar.com, maakjemondmasker.be, kdfc.com.au and sinnet.ru share IP numbers with guestcertify.com.

Name Servers

Two name servers autumn.ns.cloudflare.com and eric.ns.cloudflare.com handle delegation for guestcertify.com.

guestcertify.com uses the same name server setup as other domains, for example adacta-group.com, illustration-magazine.com, thinklife.com.br, stony-lane.com and mountainbikesonly.com.

guestcertify.com partially shares name servers with other domains; examples include inkifi.com, gal2.org, wharlie.co.uk, pg365-vip.net and candyteentube.com.

These name servers are often used with the name servers pam.ns.cloudflare.com and fattouche.ns.cloudflare.com.

Host names with six IP numbers: autumn.ns.cloudflare.com points to: 2606:4700:50::a29f:2694, 2803:f800:50::6ca2:c294, 2a06:98c1:50::ac40:2294, 108.162.194.148, 162.159.38.148 and 172.64.34.148; eric.ns.cloudflare.com points to: 2606:4700:58::adf5:3b70, 2803:f800:50::6ca2:c170, 2a06:98c1:50::ac40:2170, 108.162.193.112, 172.64.33.112 and 173.245.59.112.

guestcertify.com - robtex.com