cobuildltd.com - robtex.com

cobuildltd.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:342a🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:c311🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.52.42Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.195.17🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSkate.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a7c🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkate.ns.cloudflare.com
A2803:f800:50::6ca2:c07c🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRkate.ns.cloudflare.com
A2a06:98c1:50::ac40:207c🇺🇸 Cloudflare2a06:98c1:50::/45
PTRkate.ns.cloudflare.com
A108.162.192.124🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkate.ns.cloudflare.com
A172.64.32.124🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkate.ns.cloudflare.com
A173.245.58.124🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkate.ns.cloudflare.com
NSnoah.ns.cloudflare.com
A2606:4700:58::adf5:3b85🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnoah.ns.cloudflare.com
A2803:f800:50::6ca2:c185🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRnoah.ns.cloudflare.com
A2a06:98c1:50::ac40:2185🇺🇸 Cloudflare2a06:98c1:50::/45
PTRnoah.ns.cloudflare.com
A108.162.193.133🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnoah.ns.cloudflare.com
A172.64.33.133🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnoah.ns.cloudflare.com
A173.245.59.133🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnoah.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c06::1a🇺🇸 Google2607:f8b0:4004::/48
PTRbg-in-f26.1e100.net
A172.253.139.27🇺🇸 Google172.253.139.0/24
PTRyuiadsk-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c0f::1b🇨🇱 Google2800:3f0:4003::/48
A108.177.123.27🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.26🇺🇸 Google172.253.116.0/24
PTRdj-in-f26.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.27🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f27.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:400c:c23::1a🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f26.1e100.net
A172.253.157.27🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f27.1e100.net
TXTfacebook-domain-verification=ricr1o2l2mqfo3xt4chqneezq864qt
TXTgoogle-site-verification=-elkD7wOsjKT8C5uJwVRC07Bu844cD7WJnTJakRNbM0
TXTgoogle-site-verification=8Of7j8vylOloUqyhShRR-iLMPhxFsKpc-ZBRaVaffWg
TXTv=spf1 +mx +a +ip4:213.136.76.119 +include:relay.mailchannels.net +include:_s...
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.52.42, 172.67.195.17
IPv6 hints2606:4700:3031::6815:342a, 2606:4700:3032::ac43:c311
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=111, name=cloudflare-ech.com
SOAkate.ns.cloudflare.comdns@cloudflare.com serial=2410583306

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785732842

PTR for

18.161.99.91.in-addr.arpa

Same first word

cobuildltd.com

DNS History

15 records (11 active, 4 former)

NSkate.ns.cloudflare.comnoah.ns.cloudflare.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA104.21.52.42172.67.195.172606:4700:3031::6815:342a2606:4700:3032::ac43:c311188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::
●NSkate.ns.cloudflare.com2026-06-27 → 2026-08-03 · 2 obs
● 2026-06-27 15:10:06
● 2026-08-03 05:02:18
●NSnoah.ns.cloudflare.com2026-06-27 → 2026-08-03 · 2 obs
● 2026-06-27 15:10:06
● 2026-08-03 05:02:18
●MXalt1.aspmx.l.google.com2026-06-27 → 2026-08-03 · 2 obs
● 2026-06-27 15:10:06
● 2026-08-03 05:02:18
●MXalt2.aspmx.l.google.com2026-06-27 → 2026-08-03 · 2 obs
● 2026-06-27 15:10:06
● 2026-08-03 05:02:18
●MXalt3.aspmx.l.google.com2026-06-27 → 2026-08-03 · 2 obs
● 2026-06-27 15:10:06
● 2026-08-03 05:02:18
●MXalt4.aspmx.l.google.com2026-06-27 → 2026-08-03 · 2 obs
● 2026-06-27 15:10:06
● 2026-08-03 05:02:18
●MXaspmx.l.google.com2026-06-27 → 2026-08-03 · 2 obs
● 2026-06-27 15:10:06
● 2026-08-03 05:02:18
●A104.21.52.422026-06-27 → 2026-08-03 · 4 obs
● 2026-06-27 15:10:06
○ 2026-07-08 09:18:28
● 2026-07-11 10:54:22
● 2026-08-03 05:02:18
●A172.67.195.172026-06-27 → 2026-08-03 · 4 obs
● 2026-06-27 15:10:06
○ 2026-07-08 09:18:28
● 2026-07-11 10:54:22
● 2026-08-03 05:02:18
○A188.114.96.02026-07-08 → 2026-07-08 · 4 obs
○ 2026-06-27 15:10:06
● 2026-07-08 09:18:28
○ 2026-07-11 10:54:22
○ 2026-08-03 05:02:18
○A188.114.97.02026-07-08 → 2026-07-08 · 4 obs
○ 2026-06-27 15:10:06
● 2026-07-08 09:18:28
○ 2026-07-11 10:54:22
○ 2026-08-03 05:02:18
●A2606:4700:3031::6815:342a2026-06-27 → 2026-08-03 · 4 obs
● 2026-06-27 15:10:06
○ 2026-07-08 09:18:28
● 2026-07-11 10:54:22
● 2026-08-03 05:02:18
●A2606:4700:3032::ac43:c3112026-06-27 → 2026-08-03 · 4 obs
● 2026-06-27 15:10:06
○ 2026-07-08 09:18:28
● 2026-07-11 10:54:22
● 2026-08-03 05:02:18
○A2a06:98c1:3120::2026-07-08 → 2026-07-08 · 4 obs
○ 2026-06-27 15:10:06
● 2026-07-08 09:18:28
○ 2026-07-11 10:54:22
○ 2026-08-03 05:02:18
○A2a06:98c1:3121::2026-07-08 → 2026-07-08 · 4 obs
○ 2026-06-27 15:10:06
● 2026-07-08 09:18:28
○ 2026-07-11 10:54:22
○ 2026-08-03 05:02:18

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
cobuildltd.comkate.ns.cloudflare.com, noah.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.133

NS records: kate.ns.cloudflare.com, noah.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cobuildltd.com (unsigned zone)

⏱️ Timing

Total: 179ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.195.17, 104.21.52.42
AAAA22606:4700:3031::6815:342a, 2606:4700:3032::ac43:c311
NS2kate.ns.cloudflare.com, noah.ns.cloudflare.com
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT4facebook-domain-verification=ricr1o2l2mq, google-site-verification=-elkD7wOsjKT8C5...
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1kate.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

cobuildltd.com resolves to four IP addresses: 104.21.52.42, 172.67.195.17, 2606:4700:3031::6815:342a and 2606:4700:3032::ac43:c311.

Among the host names that share IP numbers with cobuildltd.com are www.sucursales.com.mx, allenshire.co.uk, xn--9g3b5ay3kd1l.com and two others.

Name Servers

DNS delegation for cobuildltd.com points to two name servers: kate.ns.cloudflare.com and noah.ns.cloudflare.com.

cobuildltd.com has the same name server delegation as a number of other domains, such as ashleypoole.co.uk, maltakarate.com, anthonybaca.com and two more.

cobuildltd.com has at least partial name server overlap with other domains, such as cabinet-live.com, monache.com, qldktiq.top and two others.

It is common to see these name servers used together with name servers toby.ns.cloudflare.com and mitchell.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

kate.ns.cloudflare.com has IP addresses 108.162.192.124, 172.64.32.124 and 173.245.58.124, plus 3 other.

noah.ns.cloudflare.com has IP addresses 108.162.193.133, 172.64.33.133 and 173.245.59.133, plus 3 other.

Mail Servers

cobuildltd.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

cobuildltd.com shares at least some of its mail servers with other domains — for example mnmail.net, vejen-sk.dk, meemsbox.com and two more.

It is common to find these mail servers paired with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 more.

Hosts with two IP numbers each:

aspmx.l.google.com has two IP addresses: 172.253.139.27 and 2607:f8b0:4004:c06::1a.

alt1.aspmx.l.google.com has two IP addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com has two IP addresses: 172.253.116.26 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com has two IP addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com has two IP addresses: 172.253.157.27 and 2a00:1450:400c:c23::1a.