`crbunderground.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:4f96^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:9251^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.79.150^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.146.81^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cass.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a51^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cass.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c051^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cass.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2051^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cass.ns.cloudflare.com`
		A	108.162.192.81^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cass.ns.cloudflare.com`
		A	172.64.32.81^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cass.ns.cloudflare.com`
		A	173.245.58.81^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cass.ns.cloudflare.com`
NS	`randall.ns.cloudflare.com`
		A	2606:4700:58::a29f:2ceb^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`randall.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3eb^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`randall.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23eb^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`randall.ns.cloudflare.com`
		A	108.162.195.235^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`randall.ns.cloudflare.com`
		A	162.159.44.235^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`randall.ns.cloudflare.com`
		A	172.64.35.235^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`randall.ns.cloudflare.com`
TXT	`v=spf1 include:secureserver.net include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.79.150, 172.67.146.81
		IPv6	2606:4700:3030::6815:4f96, 2606:4700:3033::ac43:9251
SOA	`cass.ns.cloudflare.com`dns@cloudflare.com serial=2399634856

`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

Same first word

crbunderground.com

DNS History

12 records (6 active, 6 former)

●NScass.ns.cloudflare.com2026-02-17 → 2026-03-22 · 3 obs

○ 2020-01-17 13:02:52
● 2026-02-17 03:07:50
● 2026-03-22 14:48:18

○NSns1.bluehost.com2017-01-11 → 2020-01-17 · 4 obs

● 2017-01-11 08:15:42
● 2020-01-17 13:02:52
○ 2026-02-17 03:07:50
○ 2026-03-22 14:48:18

○NSns2.bluehost.com2017-01-11 → 2020-01-17 · 4 obs

● 2017-01-11 08:15:42
● 2020-01-17 13:02:52
○ 2026-02-17 03:07:50
○ 2026-03-22 14:48:18

●NSrandall.ns.cloudflare.com2026-02-17 → 2026-03-22 · 3 obs

○ 2020-01-17 13:02:52
● 2026-02-17 03:07:50
● 2026-03-22 14:48:18

○MXmail.crbunderground.com2017-01-11 → 2026-02-17 · 4 obs

● 2017-01-11 08:15:42
● 2026-02-17 03:07:50
○ 2026-02-17 09:31:28
○ 2026-03-22 14:48:18

●A104.21.79.1502026-02-17 → 2026-03-22 · 3 obs

○ 2020-01-17 13:02:52
● 2026-02-17 03:07:50
● 2026-03-22 14:48:18

●A172.67.146.812026-02-17 → 2026-03-22 · 3 obs

○ 2020-01-17 13:02:52
● 2026-02-17 03:07:50
● 2026-03-22 14:48:18

●A2606:4700:3030::6815:4f962026-02-17 → 2026-03-22 · 3 obs

○ 2020-01-17 13:02:52
● 2026-02-17 03:07:50
● 2026-03-22 14:48:18

●A2606:4700:3033::ac43:92512026-02-17 → 2026-03-22 · 3 obs

○ 2020-01-17 13:02:52
● 2026-02-17 03:07:50
● 2026-03-22 14:48:18

○A50.87.248.262020-01-17 → 2020-01-17 · 4 obs

○ 2017-01-11 08:15:42
● 2020-01-17 13:02:52
○ 2026-02-17 03:07:50
○ 2026-03-22 14:48:18

○A69.195.124.1312017-01-11 → 2017-01-11 · 4 obs

○ 2016-04-23 02:39:18
● 2017-01-11 08:15:42
○ 2020-01-17 13:02:52
○ 2026-03-22 14:48:18

○A74.220.199.62016-04-23 → 2016-04-23 · 3 obs

● 2016-04-23 02:39:18
○ 2017-01-11 08:15:42
○ 2026-03-22 14:48:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
crbunderground.com	cass.ns.cloudflare.com, randall.ns.cloudflare.com	12 records

✅ Authoritative Response

Server: 108.162.195.235

NS records: cass.ns.cloudflare.com, randall.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for crbunderground.com (unsigned zone)

⏱️ Timing

Total: 202ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.79.150, 172.67.146.81`
AAAA	2	`2606:4700:3033::ac43:9251, 2606:4700:3030::6815:4f96`
NS	2	`cass.ns.cloudflare.com, randall.ns.cloudflare.com`
TXT	1	`v=spf1 include:secureserver.net include:`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cass.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

crbunderground.com points to four IP numbers: 2606:4700:3030::6815:4f96, 2606:4700:3033::ac43:9251, 104.21.79.150 and 172.67.146.81.

Other host names including ecoavant.com, chinaentryvisa.com, phoneinput.com, planetromeofoundation.lgbt and www.first-federal.com share IP numbers with crbunderground.com.

Name Servers

crbunderground.com's delegation uses two name servers, cass.ns.cloudflare.com and randall.ns.cloudflare.com.

crbunderground.com shares the same name server setup as other domains, for example colbycoinc.com, boyddesigngrouptx.com, industrialwatersolutions.net, adamsunlimitedconstruction.com and luke648painting.com.

crbunderground.com at least partially shares name servers with other domains, including ouachitacounty.org, zjjlive.net, beachwood100.org, arabtv.ca and thrillbet-au.com.

These name servers are commonly used with kristina.ns.cloudflare.com and nitin.ns.cloudflare.com.

Host names with six IP numbers:

cass.ns.cloudflare.com points to: 2606:4700:50::adf5:3a51, 2803:f800:50::6ca2:c051, 2a06:98c1:50::ac40:2051, 108.162.192.81, 172.64.32.81 and 173.245.58.81.

randall.ns.cloudflare.com points to: 2606:4700:58::a29f:2ceb, 2803:f800:50::6ca2:c3eb, 2a06:98c1:50::ac40:23eb, 108.162.195.235, 162.159.44.235 and 172.64.35.235.

crbunderground.com - robtex.com