`comcastfiber.net`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:3be5^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::ac43:b8d4^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.59.229^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.184.212^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`alberto.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c12^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alberto.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c312^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`alberto.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2312^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`alberto.ns.cloudflare.com`
		A	108.162.195.18^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alberto.ns.cloudflare.com`
		A	162.159.44.18^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alberto.ns.cloudflare.com`
		A	172.64.35.18^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alberto.ns.cloudflare.com`
NS	`zariyah.ns.cloudflare.com`
		A	2606:4700:50::a29f:2648^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zariyah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c248^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`zariyah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2248^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`zariyah.ns.cloudflare.com`
		A	108.162.194.72^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zariyah.ns.cloudflare.com`
		A	162.159.38.72^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zariyah.ns.cloudflare.com`
		A	172.64.34.72^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zariyah.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.59.229, 172.67.184.212
		IPv6 hints	2606:4700:3031::6815:3be5, 2606:4700:3031::ac43:b8d4
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=228, name=cloudflare-ech.com
SOA	`alberto.ns.cloudflare.com`dns@cloudflare.com serial=2408995131

`net`

	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=1784545552

Subdomains

www.comcastfiber.net

Same first word

comcastfiber.net

DNS History

24 records (6 active, 18 former)

●NSalberto.ns.cloudflare.com2026-05-28 → 2026-07-20 · 3 obs

○ 2018-07-18 20:49:16
● 2026-05-28 14:44:02
● 2026-07-20 11:22:44

○NSns45.domaincontrol.com2015-06-28 → 2015-06-28 · 3 obs

● 2015-06-28 04:28:58
○ 2015-11-09 17:13:14
○ 2026-07-20 11:22:44

○NSns46.domaincontrol.com2015-06-28 → 2015-06-28 · 3 obs

● 2015-06-28 04:28:58
○ 2015-11-09 17:13:14
○ 2026-07-20 11:22:44

○NSns75.domaincontrol.com2018-07-18 → 2018-07-18 · 4 obs

○ 2015-11-09 17:13:14
● 2018-07-18 20:49:16
○ 2026-05-28 14:44:02
○ 2026-07-20 11:22:44

○NSns76.domaincontrol.com2018-07-18 → 2018-07-18 · 4 obs

○ 2015-11-09 17:13:14
● 2018-07-18 20:49:16
○ 2026-05-28 14:44:02
○ 2026-07-20 11:22:44

●NSzariyah.ns.cloudflare.com2026-05-28 → 2026-07-20 · 3 obs

○ 2018-07-18 20:49:16
● 2026-05-28 14:44:02
● 2026-07-20 11:22:44

○MXmailstore1.secureserver.net2015-06-28 → 2015-06-28 · 3 obs

● 2015-06-28 04:28:58
○ 2015-11-09 17:13:14
○ 2026-07-20 11:22:44

○MXsmtp.secureserver.net2015-06-28 → 2015-06-28 · 3 obs

● 2015-06-28 04:28:58
○ 2015-11-09 17:13:14
○ 2026-07-20 11:22:44

●A104.21.59.2292026-05-28 → 2026-07-20 · 3 obs

○ 2018-07-18 20:49:16
● 2026-05-28 14:44:02
● 2026-07-20 11:22:44

●A172.67.184.2122026-05-28 → 2026-07-20 · 3 obs

○ 2018-07-18 20:49:16
● 2026-05-28 14:44:02
● 2026-07-20 11:22:44

○A184.168.221.332018-07-18 → 2018-07-18 · 4 obs

○ 2015-11-09 17:13:14
● 2018-07-18 20:49:16
○ 2026-05-28 14:44:02
○ 2026-07-20 11:22:44

○A184.168.221.362018-07-18 → 2018-07-18 · 4 obs

○ 2015-11-09 17:13:14
● 2018-07-18 20:49:16
○ 2026-05-28 14:44:02
○ 2026-07-20 11:22:44

○A184.168.221.372018-07-18 → 2018-07-18 · 4 obs

○ 2015-11-09 17:13:14
● 2018-07-18 20:49:16
○ 2026-05-28 14:44:02
○ 2026-07-20 11:22:44

○A184.168.221.392018-07-18 → 2018-07-18 · 4 obs

○ 2015-11-09 17:13:14
● 2018-07-18 20:49:16
○ 2026-05-28 14:44:02
○ 2026-07-20 11:22:44

○A184.168.221.402018-07-18 → 2018-07-18 · 4 obs

○ 2015-11-09 17:13:14
● 2018-07-18 20:49:16
○ 2026-05-28 14:44:02
○ 2026-07-20 11:22:44

○A184.168.221.532018-07-18 → 2018-07-18 · 4 obs

○ 2015-11-09 17:13:14
● 2018-07-18 20:49:16
○ 2026-05-28 14:44:02
○ 2026-07-20 11:22:44

○A184.168.221.542018-07-18 → 2018-07-18 · 4 obs

○ 2015-11-09 17:13:14
● 2018-07-18 20:49:16
○ 2026-05-28 14:44:02
○ 2026-07-20 11:22:44

●A2606:4700:3031::6815:3be52026-06-24 → 2026-07-20 · 3 obs

○ 2026-06-08 15:12:52
● 2026-06-24 14:04:02
● 2026-07-20 11:22:44

●A2606:4700:3031::ac43:b8d42026-06-24 → 2026-07-20 · 3 obs

○ 2026-06-08 15:12:52
● 2026-06-24 14:04:02
● 2026-07-20 11:22:44

○A2606:4700:3036::ac43:b8d42026-05-28 → 2026-06-08 · 5 obs

○ 2018-07-18 20:49:16
● 2026-05-28 14:44:02
● 2026-06-08 15:12:52
○ 2026-06-24 14:04:02
○ 2026-07-20 11:22:44

○A2606:4700:3037::6815:3be52026-05-28 → 2026-06-08 · 5 obs

○ 2018-07-18 20:49:16
● 2026-05-28 14:44:02
● 2026-06-08 15:12:52
○ 2026-06-24 14:04:02
○ 2026-07-20 11:22:44

○A50.63.202.492018-07-18 → 2018-07-18 · 4 obs

○ 2015-11-09 17:13:14
● 2018-07-18 20:49:16
○ 2026-05-28 14:44:02
○ 2026-07-20 11:22:44

○A50.63.202.612018-07-18 → 2018-07-18 · 4 obs

○ 2015-11-09 17:13:14
● 2018-07-18 20:49:16
○ 2026-05-28 14:44:02
○ 2026-07-20 11:22:44

○A50.63.202.762015-06-28 → 2015-06-28 · 3 obs

● 2015-06-28 04:28:58
○ 2015-11-09 17:13:14
○ 2026-07-20 11:22:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
comcastfiber.net	zariyah.ns.cloudflare.com, alberto.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.72

NS records: zariyah.ns.cloudflare.com, alberto.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for comcastfiber.net (unsigned zone)

⏱️ Timing

Total: 337ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.184.212, 104.21.59.229`
AAAA	2	`2606:4700:3031::ac43:b8d4, 2606:4700:3031::6815:3be5`
NS	2	`alberto.ns.cloudflare.com, zariyah.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`alberto.ns.cloudflare.com dns.cloudflare`

Analysis

Hierarchy

comcastfiber.net serves as the parent of www.comcastfiber.net.

IP Addresses

comcastfiber.net resolves to four IP addresses: 104.21.59.229, 172.67.184.212, 2606:4700:3031::6815:3be5 and 2606:4700:3031::ac43:b8d4.

Two other host names, along with cartelera.h-active.website, migrant.ie and 7818.com, also share IP numbers with comcastfiber.net.

Name Servers

comcastfiber.net uses two name servers for its delegation: alberto.ns.cloudflare.com and zariyah.ns.cloudflare.com.

comcastfiber.net shares its NS records with other domains, for example eoei.net, bbw(0x7075737379).net, echange-tomates.net and two others.

comcastfiber.net has at least partial name server overlap with other domains, such as wodeshijiezuixinban.com.cn, tanggaroket.it.com, familyofficedatapro.info and two others.

These name servers tend to appear together with the name servers malavika.ns.cloudflare.com, nelly.ns.cloudflare.com and andy.ns.cloudflare.com.

DNS names with 6 IP addresses:

Hostname alberto.ns.cloudflare.com directs to 108.162.195.18, 162.159.44.18 and 172.64.35.18 along with 3 other IP addresses.

Hostname zariyah.ns.cloudflare.com directs to 108.162.194.72, 162.159.38.72 and 172.64.34.72 along with 3 other IP addresses.

comcastfiber.net - robtex.com