`classnetworks.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::ac43:ba56^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:442b^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.68.43^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.186.86^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`sage.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cec^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sage.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3ec^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sage.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23ec^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sage.ns.cloudflare.com`
		A	108.162.195.236^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sage.ns.cloudflare.com`
		A	162.159.44.236^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sage.ns.cloudflare.com`
		A	172.64.35.236^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sage.ns.cloudflare.com`
NS	`sunny.ns.cloudflare.com`
		A	2606:4700:50::a29f:26a6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sunny.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2a6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sunny.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22a6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sunny.ns.cloudflare.com`
		A	108.162.194.166^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sunny.ns.cloudflare.com`
		A	162.159.38.166^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sunny.ns.cloudflare.com`
		A	172.64.34.166^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sunny.ns.cloudflare.com`
MX	`eu-smtp-inbound-1.mimecast.com` ⭐
		A	91.220.42.201^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	91.220.42.211^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	91.220.42.241^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.201^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.211^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.241^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
MX	`eu-smtp-inbound-2.mimecast.com` ⭐
		A	91.220.42.201^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	91.220.42.211^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	91.220.42.241^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.201^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.211^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.241^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
TXT	`0ed1fe018a49bc158722304c84a01cc177c23cae36`
TXT	`6havq7umnncnpn5b5r2e4pf6gr`
TXT	`@docusign=ece4dd7e-4e22-4f23-aba5-6729a8f671a4`
TXT	`MS=ms64244291`
TXT	`apple-domain-verification=JjUu07n0q2G5QePy`
TXT	`biej82lkbcs6p5i47n04vfjadh`
TXT	`google-site-verification=Ig-ajlwVhEMdp7y9YcnJPday-E01UeWdlVuKtyWDEf8`
TXT	`m3oae6ms95tpr1gpdjo52ku47s`
TXT	`nl7i5bdpuiqehs8q3vu68o2ni4`
TXT	`v=spf1 include:spf.protection.outlook.com include:spf.uk.exclaimer.net includ...`
TXT	`vpe=f6550f2f`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.68.43, 172.67.186.86
		IPv6	2606:4700:3035::ac43:ba56, 2606:4700:3036::6815:442b
SOA	`sage.ns.cloudflare.com`dns@cloudflare.com serial=2398759783

`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

Subdomains

www.classnetworks.com

Same first word

classnetworks.com

DNS History

14 records (8 active, 6 former)

○NSdns0.easily.co.uk2015-06-07 → 2017-12-24 · 4 obs

● 2015-06-07 22:53:24
● 2017-12-24 11:17:16
○ 2026-02-15 09:31:42
○ 2026-03-15 10:22:02

○NSdns1.easily.co.uk2015-06-07 → 2017-12-24 · 4 obs

● 2015-06-07 22:53:24
● 2017-12-24 11:17:16
○ 2026-02-15 09:31:42
○ 2026-03-15 10:22:02

●NSsage.ns.cloudflare.com2026-02-15 → 2026-03-15 · 3 obs

○ 2017-12-24 11:17:16
● 2026-02-15 09:31:42
● 2026-03-15 10:22:02

●NSsunny.ns.cloudflare.com2026-02-15 → 2026-03-15 · 3 obs

○ 2017-12-24 11:17:16
● 2026-02-15 09:31:42
● 2026-03-15 10:22:02

○MXcluster4.eu.messagelabs.com2015-06-07 → 2017-12-24 · 4 obs

● 2015-06-07 22:53:24
● 2017-12-24 11:17:16
○ 2026-02-15 09:31:42
○ 2026-03-15 10:22:02

○MXcluster4a.eu.messagelabs.com2015-06-07 → 2017-12-24 · 4 obs

● 2015-06-07 22:53:24
● 2017-12-24 11:17:16
○ 2026-02-15 09:31:42
○ 2026-03-15 10:22:02

●MXeu-smtp-inbound-1.mimecast.com2026-02-15 → 2026-03-15 · 3 obs

○ 2017-12-24 11:17:16
● 2026-02-15 09:31:42
● 2026-03-15 10:22:02

●MXeu-smtp-inbound-2.mimecast.com2026-02-15 → 2026-03-15 · 3 obs

○ 2017-12-24 11:17:16
● 2026-02-15 09:31:42
● 2026-03-15 10:22:02

●A104.21.68.432026-02-15 → 2026-03-15 · 3 obs

○ 2017-12-24 11:17:16
● 2026-02-15 09:31:42
● 2026-03-15 10:22:02

●A172.67.186.862026-02-15 → 2026-03-15 · 3 obs

○ 2017-12-24 11:17:16
● 2026-02-15 09:31:42
● 2026-03-15 10:22:02

○A174.129.25.1702017-12-24 → 2017-12-24 · 4 obs

○ 2016-12-24 12:40:42
● 2017-12-24 11:17:16
○ 2026-02-15 09:31:42
○ 2026-03-15 10:22:02

○A185.53.172.2392015-06-07 → 2016-12-24 · 4 obs

● 2015-06-07 22:53:24
● 2016-12-24 12:40:42
○ 2017-12-24 11:17:16
○ 2026-03-15 10:22:02

●A2606:4700:3035::ac43:ba562026-02-15 → 2026-03-15 · 3 obs

○ 2017-12-24 11:17:16
● 2026-02-15 09:31:42
● 2026-03-15 10:22:02

●A2606:4700:3036::6815:442b2026-02-15 → 2026-03-15 · 3 obs

○ 2017-12-24 11:17:16
● 2026-02-15 09:31:42
● 2026-03-15 10:22:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
classnetworks.com	sunny.ns.cloudflare.com, sage.ns.cloudflare.com	12 records

✅ Authoritative Response

Server: 108.162.195.236

NS records: sunny.ns.cloudflare.com, sage.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classnetworks.com (unsigned zone)

⏱️ Timing

Total: 231ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.186.86, 104.21.68.43`
AAAA	2	`2606:4700:3035::ac43:ba56, 2606:4700:3036::6815:442b`
NS	2	`sage.ns.cloudflare.com, sunny.ns.cloudflare.com`
MX	2	`eu-smtp-inbound-1.mimecast.com (pri: 10), eu-smtp-inbound-2.mimecast.com (pri: 10)`
TXT	11	`0ed1fe018a49bc158722304c84a01cc177c23cae, 6havq7umnncnpn5b5r2e4pf6gr...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`sage.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

www.classnetworks.com has classnetworks.com as its parent.

IP Addresses

classnetworks.com maps to four IP numbers: 2606:4700:3035::ac43:ba56, 2606:4700:3036::6815:442b, 104.21.68.43 and 172.67.186.86.

Other host names, for instance annuncitravescortitalia.it, elle-c.com, www.classnetworks.com, 303cc.cc and excellentdreams.nl share IP numbers with classnetworks.com.

Name Servers

Two name servers sage.ns.cloudflare.com and sunny.ns.cloudflare.com are delegated to classnetworks.com.

classnetworks.com uses the same name server configuration as other domains, such as integratedbsl.com, pinkconnect.com, yorka.com.tr, serverhost.xyz and ticcomms.co.uk.

classnetworks.com at least partially shares name servers with other domains such as rizhaocha.com.cn, idccs.cn, ydze.cn, plumflower.com.cn and agnosticwan.com.

These name servers are commonly used with blakely.ns.cloudflare.com, sullivan.ns.cloudflare.com, ricardo.ns.cloudflare.com and tanner.ns.cloudflare.com.

Host names with six IP numbers: Host name sage.ns.cloudflare.com points to 2606:4700:58::a29f:2cec, 2803:f800:50::6ca2:c3ec, 2a06:98c1:50::ac40:23ec, 108.162.195.236, 162.159.44.236 and 172.64.35.236; host name sunny.ns.cloudflare.com points to 2606:4700:50::a29f:26a6, 2803:f800:50::6ca2:c2a6, 2a06:98c1:50::ac40:22a6, 108.162.194.166, 162.159.38.166 and 172.64.34.166.

Mail Servers

Two mail servers handle classnetworks.com: eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com.

classnetworks.com shares the same mail server setup as other domains, including ggbmagazine.com, oneworldadvanced.com, mizuno.eu, witanstudios.co.uk and ecgl.ca.

classnetworks.com shares mail servers with other domains at least in part, for instance ukmba.org, anana.biz, fleethotspot.com, kingstonsmithw1.co.uk and alfmeier.cz.