cosbuilder.info - robtex.com

cosbuilder.info

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:ceb3🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::6815:4d67🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.77.103Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.206.179🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSbrynne.ns.cloudflare.com ⭐
A2606:4700:50::a29f:2641🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbrynne.ns.cloudflare.com
A2803:f800:50::6ca2:c241🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRbrynne.ns.cloudflare.com
A2a06:98c1:50::ac40:2241🇺🇸 Cloudflare2a06:98c1:50::/45
PTRbrynne.ns.cloudflare.com
A108.162.194.65🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbrynne.ns.cloudflare.com
A162.159.38.65Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbrynne.ns.cloudflare.com
A172.64.34.65🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbrynne.ns.cloudflare.com
NSthaddeus.ns.cloudflare.com
A2606:4700:58::a29f:2c7f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRthaddeus.ns.cloudflare.com
A2803:f800:50::6ca2:c37f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRthaddeus.ns.cloudflare.com
A2a06:98c1:50::ac40:237f🇺🇸 Cloudflare2a06:98c1:50::/45
PTRthaddeus.ns.cloudflare.com
A108.162.195.127🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRthaddeus.ns.cloudflare.com
A162.159.44.127Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRthaddeus.ns.cloudflare.com
A172.64.35.127🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRthaddeus.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c06::1a🇺🇸 Google2607:f8b0:4004::/48
PTRbg-in-f26.1e100.net
A142.251.16.27🇺🇸 Google142.251.16.0/24
PTRbl-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c0f::1a🇨🇱 Google2800:3f0:4003::/48
A108.177.123.26🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c01::1a🇮🇪 Google2a00:1450:400b::/48
PTRdi-in-f26.1e100.net
A74.125.193.26🇺🇸 Google74.125.193.0/24
PTRdi-in-f26.1e100.net
PTRig-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::1b🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f27.1e100.net
A172.253.157.26🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f26.1e100.net
TXTgoogle-site-verification=f4qs0Nh3bb3nAWqZWkGTaU1DDLoVT-zoTAQ7GlPBJZ8
TXTv=spf1 include:_spf.google.com ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.77.103, 172.67.206.179
IPv6 hints2606:4700:3031::ac43:ceb3, 2606:4700:3035::6815:4d67
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=95, name=cloudflare-ech.com
SOAbrynne.ns.cloudflare.comdns@cloudflare.com serial=2410266668

info

DNSSEC🔒 Signed (DS record present)
NSa0.info.afilias-nst.info ⭐
NSa2.info.afilias-nst.info
NSb0.info.afilias-nst.org ⚠️ Not in parent delegation
NSb2.info.afilias-nst.org ⚠️ Not in parent delegation
NSc0.info.afilias-nst.info
NSd0.info.afilias-nst.org ⚠️ Not in parent delegation
SOAa0.info.afilias-nst.infohostmaster@donuts.email serial=1785519302
⚠️ On DNS blocklist: tif

Same first word

cosbuilder.info

Similar names

buildcores.com
bouldersci.com
sedoriclub.com
buildersoc.com
oscbuilder.com
sibercloud.com
cobuilders.com

DNS History

11 records (11 active, 0 former)

NSbrynne.ns.cloudflare.comthaddeus.ns.cloudflare.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA104.21.77.103172.67.206.1792606:4700:3031::ac43:ceb32606:4700:3035::6815:4d67
●NSbrynne.ns.cloudflare.com2026-07-25 → 2026-07-31 · 2 obs
● 2026-07-25 11:43:48
● 2026-07-31 17:42:54
●NSthaddeus.ns.cloudflare.com2026-07-25 → 2026-07-31 · 2 obs
● 2026-07-25 11:43:48
● 2026-07-31 17:42:54
●MXalt1.aspmx.l.google.com2026-07-25 → 2026-07-31 · 2 obs
● 2026-07-25 11:43:48
● 2026-07-31 17:42:54
●MXalt2.aspmx.l.google.com2026-07-25 → 2026-07-31 · 2 obs
● 2026-07-25 11:43:48
● 2026-07-31 17:42:54
●MXalt3.aspmx.l.google.com2026-07-25 → 2026-07-31 · 2 obs
● 2026-07-25 11:43:48
● 2026-07-31 17:42:54
●MXalt4.aspmx.l.google.com2026-07-25 → 2026-07-31 · 2 obs
● 2026-07-25 11:43:48
● 2026-07-31 17:42:54
●MXaspmx.l.google.com2026-07-25 → 2026-07-31 · 2 obs
● 2026-07-25 11:43:48
● 2026-07-31 17:42:54
●A104.21.77.1032026-07-25 → 2026-07-31 · 2 obs
● 2026-07-25 11:43:48
● 2026-07-31 17:42:54
●A172.67.206.1792026-07-25 → 2026-07-31 · 2 obs
● 2026-07-25 11:43:48
● 2026-07-31 17:42:54
●A2606:4700:3031::ac43:ceb32026-07-25 → 2026-07-31 · 2 obs
● 2026-07-25 11:43:48
● 2026-07-31 17:42:54
●A2606:4700:3035::6815:4d672026-07-25 → 2026-07-31 · 2 obs
● 2026-07-25 11:43:48
● 2026-07-31 17:42:54

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
infoa2.info.afilias-nst.info, a0.info.afilias-nst.info, c0.info.afilias-nst.info-
cosbuilder.infothaddeus.ns.cloudflare.com, brynne.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.38.65

NS records: thaddeus.ns.cloudflare.com, brynne.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cosbuilder.info (unsigned zone)

⏱️ Timing

Total: 497ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.206.179, 104.21.77.103
AAAA22606:4700:3031::ac43:ceb3, 2606:4700:3035::6815:4d67
NS2brynne.ns.cloudflare.com, thaddeus.ns.cloudflare.com
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT2google-site-verification=f4qs0Nh3bb3nAWq, v=spf1 include:_spf.google.com ~all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1brynne.ns.cloudflare.com dns.cloudflare.

Analysis

IP Addresses

cosbuilder.info resolves to four IP addresses: 104.21.77.103, 172.67.206.179, 2606:4700:3031::ac43:ceb3 and 2606:4700:3035::6815:4d67.

Two other host names, along with www.niramayadiagnostics.com, 2123ke.com and bonusfreecasino.com, also share IP numbers with cosbuilder.info.

Name Servers

cosbuilder.info is delegated to two name servers: brynne.ns.cloudflare.com and thaddeus.ns.cloudflare.com.

cosbuilder.info shares its NS records with other domains, for example cosbeacon.info, cosnetworkhub.info, cosleaders.info and two others.

cosbuilder.info has at least partial name server overlap with other domains, such as childfundacademy.org, fishfriend.co.uk, lalishiyan.com and two others.

These name servers tend to appear together with the name servers crystal.ns.cloudflare.com, dane.ns.cloudflare.com and lex.ns.cloudflare.com.

DNS names with 6 IP addresses:

brynne.ns.cloudflare.com resolves to 108.162.194.65, 162.159.38.65, 172.64.34.65 and 3 other IP addresses.

thaddeus.ns.cloudflare.com resolves to 108.162.195.127, 162.159.44.127, 172.64.35.127 and 3 other IP addresses.

Mail Servers

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

There is at least a partial MX overlap between cosbuilder.info and other domains, including ns500821.ns500794.ns500821.ns500841.ns500794.ns500794.ns500795.ns500794.ns500795.ns500794.ns500821.ns500821.ns500790.ns500795.lustypartnersfinder.com, ciels.it, bhognj.com and two others.

alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are mail servers that frequently appear together with these mail servers.

Host names that have two IP addresses:

aspmx.l.google.com points to 142.251.16.27 and 2607:f8b0:4004:c06::1a.

alt1.aspmx.l.google.com points to 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com points to 74.125.193.26 and 2a00:1450:400b:c01::1a.

alt3.aspmx.l.google.com points to 192.178.223.27 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com points to 172.253.157.26 and 2a00:1450:400c:c23::1b.