`columbiawork.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:52f^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:84f8^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.5.47^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.132.248^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`howard.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cab^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`howard.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3ab^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`howard.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23ab^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`howard.ns.cloudflare.com`
		A	108.162.195.171^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`howard.ns.cloudflare.com`
		A	162.159.44.171^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`howard.ns.cloudflare.com`
		A	172.64.35.171^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`howard.ns.cloudflare.com`
NS	`nucum.ns.cloudflare.com`
		A	2606:4700:50::a29f:2691^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nucum.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c291^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nucum.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2291^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nucum.ns.cloudflare.com`
		A	108.162.194.145^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nucum.ns.cloudflare.com`
		A	162.159.38.145^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nucum.ns.cloudflare.com`
		A	172.64.34.145^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nucum.ns.cloudflare.com`
MX	`route3.mx.cloudflare.net` ⭐
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route1.mx.cloudflare.net`⁽⁶⁵⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽⁹⁹⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
TXT	`_qbsf0ctmyl4ircz1e7nlfa3ajt8h1rw`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.5.47, 172.67.132.248
		IPv6 hints	2606:4700:3033::6815:52f, 2606:4700:3036::ac43:84f8
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=141, name=cloudflare-ech.com
SOA	`howard.ns.cloudflare.com`dns@cloudflare.com serial=2400636576

`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=1775210592

Same first word

columbiawork.com

DNS History

9 records (9 active, 0 former)

●NShoward.ns.cloudflare.com2026-04-02 → 2026-04-03 · 2 obs

● 2026-04-02 07:35:24
● 2026-04-03 10:04:22

●NSnucum.ns.cloudflare.com2026-04-02 → 2026-04-03 · 2 obs

● 2026-04-02 07:35:24
● 2026-04-03 10:04:22

●MXroute1.mx.cloudflare.net2026-04-02 → 2026-04-03 · 2 obs

● 2026-04-02 07:35:24
● 2026-04-03 10:04:22

●MXroute2.mx.cloudflare.net2026-04-02 → 2026-04-03 · 2 obs

● 2026-04-02 07:35:24
● 2026-04-03 10:04:22

●MXroute3.mx.cloudflare.net2026-04-02 → 2026-04-03 · 2 obs

● 2026-04-02 07:35:24
● 2026-04-03 10:04:22

●A104.21.5.472026-04-02 → 2026-04-03 · 2 obs

● 2026-04-02 07:35:24
● 2026-04-03 10:04:22

●A172.67.132.2482026-04-02 → 2026-04-03 · 2 obs

● 2026-04-02 07:35:24
● 2026-04-03 10:04:22

●A2606:4700:3033::6815:52f2026-04-02 → 2026-04-03 · 2 obs

● 2026-04-02 07:35:24
● 2026-04-03 10:04:22

●A2606:4700:3036::ac43:84f82026-04-02 → 2026-04-03 · 2 obs

● 2026-04-02 07:35:24
● 2026-04-03 10:04:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
columbiawork.com	nucum.ns.cloudflare.com, howard.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.171

NS records: nucum.ns.cloudflare.com, howard.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 678ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.5.47, 172.67.132.248`
AAAA	2	`2606:4700:3033::6815:52f, 2606:4700:3036::ac43:84f8`
NS	2	`howard.ns.cloudflare.com, nucum.ns.cloudflare.com`
MX	3	`route3.mx.cloudflare.net (pri: 61), route1.mx.cloudflare.net (pri: 65)...`
TXT	2	`_qbsf0ctmyl4ircz1e7nlfa3ajt8h1rw, v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`howard.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

columbiawork.com resolves to four IP numbers: 2606:4700:3033::6815:52f, 2606:4700:3036::ac43:84f8, 104.21.5.47 and 172.67.132.248.

Other host names such as www.sitestatusmonitor.com, eispv.com, duosolodanse.com, friscomaids.net.cdn.cloudflare.net and ksyclstp.com share IPs with columbiawork.com.

Name Servers

columbiawork.com is delegated to two name servers: howard.ns.cloudflare.com and nucum.ns.cloudflare.com.

columbiawork.com shares the same name server setup as mais2.com, humancorehub.com, weltronicarhub.sbs, futureorghub.com and rhumato.org.

columbiawork.com at least partially shares name servers with other domains, for instance perfectly.so, autohuntingclones.com, steamery.de, vip-games-max.com and jocelyneberry.com.

These name servers are commonly used together with isla.ns.cloudflare.com, becky.ns.cloudflare.com and elinore.ns.cloudflare.com.

Host names with six IP numbers:

howard.ns.cloudflare.com points to 2606:4700:58::a29f:2cab, 2803:f800:50::6ca2:c3ab, 2a06:98c1:50::ac40:23ab, 108.162.195.171, 162.159.44.171 and 172.64.35.171.

nucum.ns.cloudflare.com points to 2606:4700:50::a29f:2691, 2803:f800:50::6ca2:c291, 2a06:98c1:50::ac40:2291, 108.162.194.145, 162.159.38.145 and 172.64.34.145.

Mail Servers

Three mail servers handle columbiawork.com: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

columbiawork.com shares at least partially some mail servers with other domains, including mchughdylan.com, mahanakhon.net, mattpopp.com, foodyo.co and bamatova.org.

Host names with six IP numbers:

route1.mx.cloudflare.net points to: 2606:4700:f5::b, 2606:4700:f5::c, 2606:4700:f5::d, 162.159.205.11, 162.159.205.12 and 162.159.205.13.

route2.mx.cloudflare.net points to: 2606:4700:f5::e, 2606:4700:f5::f, 2606:4700:f5::10, 162.159.205.17, 162.159.205.18 and 162.159.205.19.

route3.mx.cloudflare.net points to: 2606:4700:f5::11, 2606:4700:f5::12, 2606:4700:f5::13, 162.159.205.23, 162.159.205.24 and 162.159.205.25.

columbiawork.com - robtex.com