`firstclass-libro.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:1d52^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::ac43:ab6e^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.29.82^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.171.110^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`hank.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b74^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hank.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c174^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hank.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2174^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hank.ns.cloudflare.com`
		A	108.162.193.116^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hank.ns.cloudflare.com`
		A	172.64.33.116^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hank.ns.cloudflare.com`
		A	173.245.59.116^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hank.ns.cloudflare.com`
NS	`lucy.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a85^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lucy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c085^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lucy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2085^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lucy.ns.cloudflare.com`
		A	108.162.192.133^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lucy.ns.cloudflare.com`
		A	172.64.32.133^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lucy.ns.cloudflare.com`
		A	173.245.58.133^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lucy.ns.cloudflare.com`
MX	`mx.firstclass-libro.com` ⭐
		A	94.177.191.31^{🇮🇹 ARUBA-ASN94.177.160.0/19 Aruba S.p.A. Network}
			PTR	`host31-191-177-94.serverdedicati.aruba.it`
TXT	`v=spf1 a mx ptr ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.29.82, 172.67.171.110
		IPv6	2606:4700:3031::6815:1d52, 2606:4700:3031::ac43:ab6e
SOA	`hank.ns.cloudflare.com`dns@cloudflare.com serial=2396866701

`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=1771291435

Up

mx.firstclass-libro.com

Same first word

firstclass-libro.com

DNS History

11 records (7 active, 4 former)

●NShank.ns.cloudflare.com2017-08-13 → 2026-02-26 · 2 obs

● 2017-08-13 17:11:40
● 2026-02-26 01:49:34

●NSlucy.ns.cloudflare.com2017-08-13 → 2026-02-26 · 2 obs

● 2017-08-13 17:11:40
● 2026-02-26 01:49:34

●MXmx.firstclass-libro.com2017-08-13 → 2026-02-26 · 2 obs

● 2017-08-13 17:11:40
● 2026-02-26 01:49:34

●A104.21.29.822026-02-25 → 2026-02-26 · 3 obs

○ 2017-08-13 17:11:40
● 2026-02-25 20:17:24
● 2026-02-26 01:49:34

○A104.28.26.2072017-08-13 → 2017-08-13 · 3 obs

● 2017-08-13 17:11:40
○ 2026-02-25 20:17:24
○ 2026-02-26 01:49:34

○A104.28.27.2072017-08-13 → 2017-08-13 · 3 obs

● 2017-08-13 17:11:40
○ 2026-02-25 20:17:24
○ 2026-02-26 01:49:34

●A172.67.171.1102026-02-25 → 2026-02-26 · 3 obs

○ 2017-08-13 17:11:40
● 2026-02-25 20:17:24
● 2026-02-26 01:49:34

○A2400:cb00:2048:1::681c:1acf2017-08-13 → 2017-08-13 · 3 obs

● 2017-08-13 17:11:40
○ 2026-02-25 20:17:24
○ 2026-02-26 01:49:34

○A2400:cb00:2048:1::681c:1bcf2017-08-13 → 2017-08-13 · 3 obs

● 2017-08-13 17:11:40
○ 2026-02-25 20:17:24
○ 2026-02-26 01:49:34

●A2606:4700:3031::6815:1d522026-02-25 → 2026-02-26 · 3 obs

○ 2017-08-13 17:11:40
● 2026-02-25 20:17:24
● 2026-02-26 01:49:34

●A2606:4700:3031::ac43:ab6e2026-02-25 → 2026-02-26 · 3 obs

○ 2017-08-13 17:11:40
● 2026-02-25 20:17:24
● 2026-02-26 01:49:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
firstclass-libro.com	hank.ns.cloudflare.com, lucy.ns.cloudflare.com	12 records

✅ Authoritative Response

Server: 108.162.193.116

NS records: hank.ns.cloudflare.com, lucy.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstclass-libro.com (unsigned zone)

⏱️ Timing

Total: 135ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.171.110, 104.21.29.82`
AAAA	2	`2606:4700:3031::6815:1d52, 2606:4700:3031::ac43:ab6e`
NS	2	`hank.ns.cloudflare.com, lucy.ns.cloudflare.com`
MX	1	`mx.firstclass-libro.com (pri: 10)`
TXT	1	`v=spf1 a mx ptr ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`hank.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

AI analysis

firstclass-libro.com is the parent of mx.firstclass-libro.com.

Four IP numbers are pointed to by firstclass-libro.com: 2606:4700:3031::6815:1d52, 2606:4700:3031::ac43:ab6e, 104.21.29.82 and 172.67.171.110.

other host names including skycloudstar.com, mediamoves.com, tahseen-me.com, pixa.eu and www.weab.fr share IP numbers with firstclass-libro.com.

firstclass-libro.com is delegated to two name servers hank.ns.cloudflare.com and lucy.ns.cloudflare.com.

firstclass-libro.com shares the same name server setup as other domains, for instance airsoftgiforum.com, 02468.org, jackpot.md, playblitz600.top and grdnfoods.com.

firstclass-libro.com at least partially shares name servers with other domains, for instance imagebank.io, raisingbaby.com, 12coinsl.com, nuoathletics.com and dropbot.sh.

These name servers are commonly used with dolly.ns.cloudflare.com, cody.ns.cloudflare.com and shubhi.ns.cloudflare.com.

Host names with six IP numbers:

Host name hank.ns.cloudflare.com points to: 2606:4700:58::adf5:3b74, 2803:f800:50::6ca2:c174, 2a06:98c1:50::ac40:2174, 108.162.193.116, 172.64.33.116 and 173.245.59.116.

Host name lucy.ns.cloudflare.com points to: 2606:4700:50::adf5:3a85, 2803:f800:50::6ca2:c085, 2a06:98c1:50::ac40:2085, 108.162.192.133, 172.64.32.133 and 173.245.58.133.

firstclass-libro.com is handled by a single mail server, mx.firstclass-libro.com.

mx.firstclass-libro.com resolves to IP 94.177.191.31.

firstclass-libro.com - robtex.com