`coreusa.co`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:1240^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:b4b5^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.18.64^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.180.181^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`algin.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b3d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`algin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c13d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`algin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:213d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`algin.ns.cloudflare.com`
		A	108.162.193.61^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`algin.ns.cloudflare.com`
		A	172.64.33.61^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`algin.ns.cloudflare.com`
		A	173.245.59.61^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`algin.ns.cloudflare.com`
NS	`arely.ns.cloudflare.com`
		A	2606:4700:50::a29f:26a4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arely.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2a4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`arely.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22a4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`arely.ns.cloudflare.com`
		A	108.162.194.164^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	162.159.38.164^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.34.164^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.18.64, 172.67.180.181
		IPv6 hints	2606:4700:3032::6815:1240, 2606:4700:3034::ac43:b4b5
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=247, name=cloudflare-ech.com
SOA	`algin.ns.cloudflare.com`dns@cloudflare.com serial=2410367706

`co`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.registrydns.co`
	NS	`b.registrydns.co`
	NS	`c.registrydns.co`
	NS	`d.registrydns.co`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1759718114

⚠️ On DNS blocklist: tif

Subdomains

re.coreusa.co

Same first word

coreusa.co

coreusa.com

Similar names

acoreus.de

coursea.com

eurocas.cl

ascoeur.com

carouse.ca

couresa.com

coursea.org

rosauce.com

acourse.com

euroacs.com

orucase.myshopify.com

acrouse.com

seocura.de

eurosca.vn

usarceo.com

cousera.com

ecosaur.com

ourcase.nl

orucase.com

carouse.life

eurasco.gr

euroasc.vic.edu.au

recousa.com

auscore.com

eurosca.com

auscore.blogspot.com

aurosec.com

sourcea.fr

asureco.com

saucero.com

cousera.org

usacore.org

acerous.net

auscore.cloud

secuora.com

acourse.io

auresco.fr

eurosca.org

usacore.com

saceuro.com

sourcea.se

aerocus.com

curaeos.nl

secuora.es

eurocas.com

eurocas.es

sourcea.co

secoura.com

corseau.com

seocura.com

sourcea.eu

acourse.de

orsauce.com

creaous.net

sourcea.com

acourse.net

cosaeru.com

eurasco.org

causero.at

acerous.org

coursea.net

acerous.cn

curaeos.com

eurocas.fr

ecosura.com

eurocas.ro

socareu.com

useorca.com

careous.com

DNS History

12 records (6 active, 6 former)

●NSalgin.ns.cloudflare.com2026-05-26 → 2026-07-28 · 2 obs

● 2026-05-26 09:10:18
● 2026-07-28 03:11:36

●NSarely.ns.cloudflare.com2026-05-26 → 2026-07-28 · 2 obs

● 2026-05-26 09:10:18
● 2026-07-28 03:11:36

●A104.21.18.642026-05-26 → 2026-07-28 · 11 obs

● 2026-05-26 09:10:18
● 2026-05-26 11:38:16
○ 2026-05-27 23:11:18
● 2026-05-29 10:42:52
● 2026-06-03 15:41:20
○ 2026-06-11 04:57:44
● 2026-06-13 01:09:06
● 2026-06-13 20:01:18
○ 2026-06-27 20:31:42
● 2026-07-02 19:35:08
● 2026-07-28 03:11:36

●A172.67.180.1812026-05-26 → 2026-07-28 · 11 obs

○A188.114.96.02026-05-27 → 2026-06-27 · 7 obs

○ 2026-05-26 11:38:16
● 2026-05-27 23:11:18
○ 2026-05-29 10:42:52
○ 2026-06-13 20:01:18
● 2026-06-27 20:31:42
○ 2026-07-02 19:35:08
○ 2026-07-28 03:11:36

○A188.114.97.02026-05-27 → 2026-06-27 · 7 obs

○ 2026-05-26 11:38:16
● 2026-05-27 23:11:18
○ 2026-05-29 10:42:52
○ 2026-06-13 20:01:18
● 2026-06-27 20:31:42
○ 2026-07-02 19:35:08
○ 2026-07-28 03:11:36

●A2606:4700:3032::6815:12402026-07-28 → 2026-07-28 · 2 obs

○ 2026-07-02 19:35:08
● 2026-07-28 03:11:36

●A2606:4700:3034::ac43:b4b52026-07-28 → 2026-07-28 · 2 obs

○ 2026-07-02 19:35:08
● 2026-07-28 03:11:36

○A2606:4700:3035::6815:12402026-05-26 → 2026-07-02 · 11 obs

○A2606:4700:3036::ac43:b4b52026-05-26 → 2026-07-02 · 11 obs

○A2a06:98c1:3120::2026-05-27 → 2026-06-27 · 7 obs

○ 2026-05-26 11:38:16
● 2026-05-27 23:11:18
○ 2026-05-29 10:42:52
○ 2026-06-13 20:01:18
● 2026-06-27 20:31:42
○ 2026-07-02 19:35:08
○ 2026-07-28 03:11:36

○A2a06:98c1:3121::2026-05-27 → 2026-06-27 · 7 obs

○ 2026-05-26 11:38:16
● 2026-05-27 23:11:18
○ 2026-05-29 10:42:52
○ 2026-06-13 20:01:18
● 2026-06-27 20:31:42
○ 2026-07-02 19:35:08
○ 2026-07-28 03:11:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co	a.registrydns.co, c.registrydns.co, b.registrydns.co, d.registrydns.co	-
coreusa.co	arely.ns.cloudflare.com, algin.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.61

NS records: arely.ns.cloudflare.com, algin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coreusa.co (unsigned zone)

⏱️ Timing

Total: 427ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.18.64, 172.67.180.181`
AAAA	2	`2606:4700:3034::ac43:b4b5, 2606:4700:3032::6815:1240`
NS	2	`algin.ns.cloudflare.com, arely.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`algin.ns.cloudflare.com dns.cloudflare.c`

Analysis

Hierarchy

coreusa.co serves as the parent of re.coreusa.co.

IP Addresses

coreusa.co has four IP addresses: 104.21.18.64, 172.67.180.181, 2606:4700:3032::6815:1240 and 2606:4700:3034::ac43:b4b5.

Two other host names, along with krevetka.pro, xx11.com.br and wzlsz.com, also share IP numbers with coreusa.co.

Name Servers

coreusa.co is served by two delegated name servers, algin.ns.cloudflare.com and arely.ns.cloudflare.com.

coreusa.co shares its NS records with other domains, for example woodpresent.com.ua, defender-telemerty.cc, jernoldcor.site and two others.

coreusa.co has at least partial name server overlap with other domains, such as frada.eu, botforx.com, flanel37.ru and two others.

These name servers tend to appear together with the name servers arya.ns.cloudflare.com, jerome.ns.cloudflare.com and sullivan.ns.cloudflare.com.

DNS names with 6 IP addresses:

algin.ns.cloudflare.com carries IP addresses 108.162.193.61, 172.64.33.61 and 173.245.59.61, with 3 other addresses beyond those.

arely.ns.cloudflare.com carries IP addresses 108.162.194.164, 162.159.38.164 and 172.64.34.164, with 3 other addresses beyond those.

coreusa.co - robtex.com

coreusa.co

co

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

`coreusa.co`

`co`