`501cio.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::ac43:9cb4^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:814^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.8.20^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.156.180^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ashton.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cad^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ashton.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3ad^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ashton.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23ad^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ashton.ns.cloudflare.com`
		A	108.162.195.173^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ashton.ns.cloudflare.com`
		A	162.159.44.173^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ashton.ns.cloudflare.com`
		A	172.64.35.173^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ashton.ns.cloudflare.com`
NS	`eva.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a72^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`eva.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c072^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`eva.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2072^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`eva.ns.cloudflare.com`
		A	108.162.192.114^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`eva.ns.cloudflare.com`
		A	172.64.32.114^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`eva.ns.cloudflare.com`
		A	173.245.58.114^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`eva.ns.cloudflare.com`
MX	`501cio-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c802::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-cy4pr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch1pr04cu00101.inbound.protection.outlook.com`
		A	2a01:111:f403:f802::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj2pr05cu00101.inbound.protection.outlook.com`
		A	2a01:111:f403:f902::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-mn2pr02cu00202.inbound.protection.outlook.com`
		A	52.101.8.44^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dm5pr04cu00104.inbound.protection.outlook.com`
		A	52.101.10.18^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn8pr05cu00302.inbound.protection.outlook.com`
		A	52.101.41.4^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj2pr05cu00204.inbound.protection.outlook.com`
		A	52.101.41.21^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj2pr05cu00305.inbound.protection.outlook.com`
TXT	`brevo-code:53228daa2183938223d91aae56c2fab8`
TXT	`v=spf1 ip4:74.115.204.0/24 ip4:74.115.207.0/24 include:spf.protection.outlook...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.8.20, 172.67.156.180
		IPv6 hints	2606:4700:3036::ac43:9cb4, 2606:4700:3037::6815:814
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=238, name=cloudflare-ech.com
SOA	`ashton.ns.cloudflare.com`dns@cloudflare.com serial=2401034076

`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=1778400946

Same first word

501cio.com

DNS History

16 records (7 active, 9 former)

●NSashton.ns.cloudflare.com2026-04-01 → 2026-05-10 · 3 obs

○ 2017-05-10 03:56:40
● 2026-04-01 07:41:56
● 2026-05-10 08:24:50

●NSeva.ns.cloudflare.com2026-04-01 → 2026-05-10 · 3 obs

○ 2017-05-10 03:56:40
● 2026-04-01 07:41:56
● 2026-05-10 08:24:50

○NSns67.worldnic.com2008-03-14 → 2017-05-10 · 4 obs

● 2008-03-14 17:22:40
● 2017-05-10 03:56:40
○ 2026-04-01 07:41:56
○ 2026-05-10 08:24:50

○NSns68.worldnic.com2008-03-14 → 2017-05-10 · 4 obs

● 2008-03-14 17:22:40
● 2017-05-10 03:56:40
○ 2026-04-01 07:41:56
○ 2026-05-10 08:24:50

●MX501cio-com.mail.protection.outlook.com2017-05-10 → 2026-05-10 · 3 obs

○ 2016-09-08 06:43:14
● 2017-05-10 03:56:40
● 2026-05-10 08:24:50

○MXinbound.501cio.com.netsolmail.net2008-03-14 → 2008-03-14 · 3 obs

● 2008-03-14 17:22:40
○ 2015-06-11 11:58:22
○ 2026-05-10 08:24:50

○MXmx04-1.sherweb2010.com2015-06-11 → 2016-09-08 · 5 obs

○ 2008-03-14 17:22:40
● 2015-06-11 11:58:22
● 2016-09-08 06:43:14
○ 2017-05-10 03:56:40
○ 2026-05-10 08:24:50

○MXmx04-2.sherweb2010.com2015-06-11 → 2016-09-08 · 5 obs

○ 2008-03-14 17:22:40
● 2015-06-11 11:58:22
● 2016-09-08 06:43:14
○ 2017-05-10 03:56:40
○ 2026-05-10 08:24:50

●A104.21.8.202026-04-01 → 2026-05-10 · 3 obs

○ 2017-05-10 03:56:40
● 2026-04-01 07:41:56
● 2026-05-10 08:24:50

○A104.236.71.2542017-05-10 → 2017-05-10 · 4 obs

○ 2016-09-08 06:43:14
● 2017-05-10 03:56:40
○ 2026-04-01 07:41:56
○ 2026-05-10 08:24:50

●A172.67.156.1802026-04-01 → 2026-05-10 · 3 obs

○ 2017-05-10 03:56:40
● 2026-04-01 07:41:56
● 2026-05-10 08:24:50

○A205.178.145.652008-03-14 → 2008-03-14 · 3 obs

● 2008-03-14 17:22:40
○ 2015-06-11 11:58:22
○ 2026-05-10 08:24:50

●A2606:4700:3036::ac43:9cb42026-04-01 → 2026-05-10 · 3 obs

○ 2017-05-10 03:56:40
● 2026-04-01 07:41:56
● 2026-05-10 08:24:50

●A2606:4700:3037::6815:8142026-04-01 → 2026-05-10 · 3 obs

○ 2017-05-10 03:56:40
● 2026-04-01 07:41:56
● 2026-05-10 08:24:50

○A45.79.194.172016-09-08 → 2016-09-08 · 4 obs

○ 2016-04-05 06:56:50
● 2016-09-08 06:43:14
○ 2017-05-10 03:56:40
○ 2026-05-10 08:24:50

○A66.96.145.1062015-06-11 → 2016-04-05 · 5 obs

○ 2008-03-14 17:22:40
● 2015-06-11 11:58:22
● 2016-04-05 06:56:50
○ 2016-09-08 06:43:14
○ 2026-05-10 08:24:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
501cio.com	eva.ns.cloudflare.com, ashton.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.173

NS records: eva.ns.cloudflare.com, ashton.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 501cio.com (unsigned zone)

⏱️ Timing

Total: 246ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.8.20, 172.67.156.180`
AAAA	2	`2606:4700:3037::6815:814, 2606:4700:3036::ac43:9cb4`
NS	2	`ashton.ns.cloudflare.com, eva.ns.cloudflare.com`
MX	1	`501cio-com.mail.protection.outlook.com (`
TXT	2	`brevo-code:53228daa2183938223d91aae56c2f, v=spf1 ip4:74.115.204.0/24 ip4:74.115.20`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`ashton.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

501cio.com refers to four IP numbers: 2606:4700:3036::ac43:9cb4, 2606:4700:3037::6815:814, 104.21.8.20 and 172.67.156.180.

Other host names, for instance wynnfire.in, www.aharonbros.co.il, acssnl.nl, sambro.nl and geoponytechco.digital share IP numbers with 501cio.com.

Name Servers

501cio.com's delegation uses two name servers: ashton.ns.cloudflare.com and eva.ns.cloudflare.com.

501cio.com uses the same name server setup as other domains, such as jvhdztyde1.pages.dev, runique.io, mrpennystocks.com, 185.run and asianxhq.com.

501cio.com at least partially shares name servers with other domains, including gedetran(0x736578)press.org, m1n6.com, 74r.buzz, nationalthreepeakschallenge.com and drdavidmalkin.com.

These name servers are commonly used together with the name servers quincy.ns.cloudflare.com, naya.ns.cloudflare.com, lana.ns.cloudflare.com and eve.ns.cloudflare.com.

Host names with six IP numbers:

ashton.ns.cloudflare.com points to 2606:4700:58::a29f:2cad, 2803:f800:50::6ca2:c3ad, 2a06:98c1:50::ac40:23ad, 108.162.195.173, 162.159.44.173 and 172.64.35.173.

eva.ns.cloudflare.com points to 2606:4700:50::adf5:3a72, 2803:f800:50::6ca2:c072, 2a06:98c1:50::ac40:2072, 108.162.192.114, 172.64.32.114 and 173.245.58.114.

Mail Servers

A single mail server handles 501cio.com, 501cio-com.mail.protection.outlook.com.

Host 501cio-com.mail.protection.outlook.com points to eight IPs: 2a01:111:f403:c802::, 2a01:111:f403:c946::1, 2a01:111:f403:f802::1, 2a01:111:f403:f902::2, 52.101.8.44, 52.101.10.18, 52.101.41.4 and 52.101.41.21.

501cio.com - robtex.com

501cio.com

com

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`501cio.com`

`com`