btcuniversity.com - robtex.com

btcuniversity.com

DNSSEC⚠️ Not signed
A76.76.21.21🇺🇸 Amazon76.76.21.0/24 EC2 Prefix
NScarioca.ns.cloudflare.com ⭐
A2606:4700:50::a29f:2614🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcarioca.ns.cloudflare.com
A2803:f800:50::6ca2:c214🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRcarioca.ns.cloudflare.com
A2a06:98c1:50::ac40:2214🇺🇸 Cloudflare2a06:98c1:50::/45
PTRcarioca.ns.cloudflare.com
A108.162.194.20🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcarioca.ns.cloudflare.com
A162.159.38.20Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcarioca.ns.cloudflare.com
A172.64.34.20🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcarioca.ns.cloudflare.com
NSdylan.ns.cloudflare.com
A2606:4700:58::a29f:2cbb🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdylan.ns.cloudflare.com
A2803:f800:50::6ca2:c3bb🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdylan.ns.cloudflare.com
A2a06:98c1:50::ac40:23bb🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdylan.ns.cloudflare.com
A108.162.195.187🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdylan.ns.cloudflare.com
A162.159.44.187Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdylan.ns.cloudflare.com
A172.64.35.187🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdylan.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c08::1a🇺🇸 Google2607:f8b0:4004::/48
PTRbi-in-f26.1e100.net
A142.251.179.26🇺🇸 Google142.251.179.0/24
PTRpd-in-f26.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4023:2801::1a🇺🇸 Google2607:f8b0::/32
PTRlcausi-in-f26.1e100.net
A192.178.128.26🇺🇸 Google192.178.128.0/24
PTRlcausi-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.27🇺🇸 Google172.253.116.0/24
PTRdj-in-f27.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4001:c21::1b🇩🇪 Google2a00:1450:4001::/48
PTRlcfrai-in-f27.1e100.net
A142.251.127.27🇺🇸 Google142.251.127.0/24
PTRlcfrai-in-f27.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:4025:c01::1a🇵🇱 Google2a00:1450:4025::/48
PTRrd-in-f26.1e100.net
A142.250.147.27🇺🇸 Google142.250.147.0/24
PTRrd-in-f27.1e100.net
TXTfacebook-domain-verification=sbn7xaxjx4h6u12g11eq1khyu2ip8f
TXTgoogle-site-verification=2-nInz5XA8T43Ar3DjPKaUHhCdFhde3wtvvV_qBFOFw
TXTgoogle-site-verification=gYC7MVzX4Dec9j_zm531B98IIuWca7JCkTP1MZb8atc
TXTgoogle-site-verification=oijszLH2zQwI2yweX4O1x9Vo1W_saY7Ch6gMo6fuIsE
TXTgoogle-site-verification=qypcVuewKKAHxoqgYDYvoHtNQe2CUMo_FEN-1dTnXzE
TXTstripe-verification=210e49cbc44e6b51206c582b48b717104b67ba203e1347d9854672bef...
TXTv=spf1 include:dc-aa8e722993._spfm.btcuniversity.com include:sendgrid.net inc...
SOAcarioca.ns.cloudflare.comdns@cloudflare.com serial=2401043578

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=1776089892

Subdomains

www.btcuniversity.com

Same first word

btcuniversity.com

Similar names

cbtuniversity.com
tbcuniversity.com

DNS History

25 records (8 active, 17 former)

20162017201820192020202120222023202420252026NScarioca.ns.cloudflare.comdylan.ns.cloudflare.coma.ns36.deb.ns36.dens-us.1and1-dns.comns-us.1and1-dns.dens-us.1and1-dns.orgns-us.1and1-dns.usns17.domaincontrol.comns18.domaincontrol.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.commailgw.ns36.demailstore1.secureserver.netmx00.1and1.commx01.1and1.comsmtp.secureserver.netA76.76.21.212607:f1c0:1000:30ae:aaeb:a677:99a3:980d50.63.202.2372.52.4.9074.208.128.31
○NSa.ns36.de2016-02-10 → 2016-07-05 · 5 obs
○ 2015-11-20 13:19:38
● 2016-02-10 16:13:20
● 2016-07-05 14:16:32
○ 2017-02-20 01:10:02
○ 2026-04-13 14:23:32
○NSb.ns36.de2016-02-10 → 2016-07-05 · 5 obs
○ 2015-11-20 13:19:38
● 2016-02-10 16:13:20
● 2016-07-05 14:16:32
○ 2017-02-20 01:10:02
○ 2026-04-13 14:23:32
●NScarioca.ns.cloudflare.com2026-03-27 → 2026-04-13 · 3 obs
○ 2017-02-20 01:10:02
● 2026-03-27 05:49:20
● 2026-04-13 14:23:32
●NSdylan.ns.cloudflare.com2026-03-27 → 2026-04-13 · 3 obs
○ 2017-02-20 01:10:02
● 2026-03-27 05:49:20
● 2026-04-13 14:23:32
○NSns-us.1and1-dns.com2015-07-22 → 2015-11-20 · 4 obs
● 2015-07-22 12:00:48
● 2015-11-20 13:19:38
○ 2016-02-10 16:13:20
○ 2026-04-13 14:23:32
○NSns-us.1and1-dns.de2015-07-22 → 2015-11-20 · 4 obs
● 2015-07-22 12:00:48
● 2015-11-20 13:19:38
○ 2016-02-10 16:13:20
○ 2026-04-13 14:23:32
○NSns-us.1and1-dns.org2015-07-22 → 2015-11-20 · 4 obs
● 2015-07-22 12:00:48
● 2015-11-20 13:19:38
○ 2016-02-10 16:13:20
○ 2026-04-13 14:23:32
○NSns-us.1and1-dns.us2015-07-22 → 2015-11-20 · 4 obs
● 2015-07-22 12:00:48
● 2015-11-20 13:19:38
○ 2016-02-10 16:13:20
○ 2026-04-13 14:23:32
○NSns17.domaincontrol.com2017-02-20 → 2017-02-20 · 4 obs
○ 2016-07-05 14:16:32
● 2017-02-20 01:10:02
○ 2026-03-27 05:49:20
○ 2026-04-13 14:23:32
○NSns18.domaincontrol.com2017-02-20 → 2017-02-20 · 4 obs
○ 2016-07-05 14:16:32
● 2017-02-20 01:10:02
○ 2026-03-27 05:49:20
○ 2026-04-13 14:23:32
●MXalt1.aspmx.l.google.com2026-03-27 → 2026-04-13 · 3 obs
○ 2017-02-20 01:10:02
● 2026-03-27 05:49:20
● 2026-04-13 14:23:32
●MXalt2.aspmx.l.google.com2026-03-27 → 2026-04-13 · 3 obs
○ 2017-02-20 01:10:02
● 2026-03-27 05:49:20
● 2026-04-13 14:23:32
●MXalt3.aspmx.l.google.com2026-03-27 → 2026-04-13 · 3 obs
○ 2017-02-20 01:10:02
● 2026-03-27 05:49:20
● 2026-04-13 14:23:32
●MXalt4.aspmx.l.google.com2026-03-27 → 2026-04-13 · 3 obs
○ 2017-02-20 01:10:02
● 2026-03-27 05:49:20
● 2026-04-13 14:23:32
●MXaspmx.l.google.com2026-03-27 → 2026-04-13 · 3 obs
○ 2017-02-20 01:10:02
● 2026-03-27 05:49:20
● 2026-04-13 14:23:32
○MXmailgw.ns36.de2016-02-10 → 2016-07-05 · 5 obs
○ 2015-11-20 13:19:38
● 2016-02-10 16:13:20
● 2016-07-05 14:16:32
○ 2017-02-20 01:10:02
○ 2026-04-13 14:23:32
○MXmailstore1.secureserver.net2017-02-20 → 2017-02-20 · 4 obs
○ 2016-07-05 14:16:32
● 2017-02-20 01:10:02
○ 2026-03-27 05:49:20
○ 2026-04-13 14:23:32
○MXmx00.1and1.com2015-07-22 → 2015-11-20 · 4 obs
● 2015-07-22 12:00:48
● 2015-11-20 13:19:38
○ 2016-02-10 16:13:20
○ 2026-04-13 14:23:32
○MXmx01.1and1.com2015-07-22 → 2015-11-20 · 4 obs
● 2015-07-22 12:00:48
● 2015-11-20 13:19:38
○ 2016-02-10 16:13:20
○ 2026-04-13 14:23:32
○MXsmtp.secureserver.net2017-02-20 → 2017-02-20 · 4 obs
○ 2016-07-05 14:16:32
● 2017-02-20 01:10:02
○ 2026-03-27 05:49:20
○ 2026-04-13 14:23:32
○A2607:f1c0:1000:30ae:aaeb:a677:99a3:980d2015-07-22 → 2015-11-20 · 4 obs
● 2015-07-22 12:00:48
● 2015-11-20 13:19:38
○ 2016-02-10 16:13:20
○ 2026-04-13 14:23:32
○A50.63.202.232017-02-20 → 2017-02-20 · 4 obs
○ 2016-07-05 14:16:32
● 2017-02-20 01:10:02
○ 2026-03-27 05:49:20
○ 2026-04-13 14:23:32
○A72.52.4.902016-02-10 → 2016-07-05 · 5 obs
○ 2015-11-20 13:19:38
● 2016-02-10 16:13:20
● 2016-07-05 14:16:32
○ 2017-02-20 01:10:02
○ 2026-04-13 14:23:32
○A74.208.128.312015-07-22 → 2015-11-20 · 4 obs
● 2015-07-22 12:00:48
● 2015-11-20 13:19:38
○ 2016-02-10 16:13:20
○ 2026-04-13 14:23:32
●A76.76.21.212026-03-27 → 2026-04-13 · 3 obs
○ 2017-02-20 01:10:02
● 2026-03-27 05:49:20
● 2026-04-13 14:23:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comm.gtld-servers.net, a.gtld-servers.net, h.gtld-servers.net, e.gtld-servers.net...-
btcuniversity.comcarioca.ns.cloudflare.com, dylan.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.195.187

NS records: carioca.ns.cloudflare.com, dylan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for btcuniversity.com (unsigned zone)

⏱️ Timing

Total: 135ms | Queries: -

📄 Records

TypeCountSample Data
A176.76.21.21
NS2carioca.ns.cloudflare.com, dylan.ns.cloudflare.com
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT7facebook-domain-verification=sbn7xaxjx4h, google-site-verification=2-nInz5XA8T43Ar...
SOA1carioca.ns.cloudflare.com dns.cloudflare

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

btcuniversity.com is the parent of www.btcuniversity.com.

IP Addresses

btcuniversity.com resolves to a single IP: 76.76.21.21.

Other host names, for instance randysridgewood.com, yilmazsahin.com.tr, motifn.com, guidedmobility.com and brelf.com share IP numbers with btcuniversity.com.

Name Servers

btcuniversity.com has two name servers: carioca.ns.cloudflare.com and dylan.ns.cloudflare.com.

btcuniversity.com shares the same name server setup as other domains, such as zzz.technology, 51mav.com, behindthechair.com and pxbank.com.br.

btcuniversity.com shares some name servers with other domains, for example techified.net, mobilcom-handytipps.de, okgame88.com, pubglite.org and jonreinhart.com.

Host names with six IP numbers: carioca.ns.cloudflare.com points to: 2606:4700:50::a29f:2614, 2803:f800:50::6ca2:c214, 2a06:98c1:50::ac40:2214, 108.162.194.20, 162.159.38.20 and 172.64.34.20; dylan.ns.cloudflare.com points to: 2606:4700:58::a29f:2cbb, 2803:f800:50::6ca2:c3bb, 2a06:98c1:50::ac40:23bb, 108.162.195.187, 162.159.44.187 and 172.64.35.187.

Mail Servers

btcuniversity.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

btcuniversity.com shares some mail servers with other domains, at least partially; for instance yiru.com, justhusky.com, qbvp.com, wqoq.com and ns500699.ns500734.ns500734.ns500734.ns500693.ns500699.ns500588.ns500588.ns500699.ns500699.ns500693.ns500699.ns500683.ns500699.ns500612.ns500110.dtrkdll.com.

these mail servers are often used together with the mail servers aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.

Host names with two IPs:

Host aspmx.l.google.com has IPs 2607:f8b0:4004:c08::1a and 142.251.179.26.

Host alt1.aspmx.l.google.com has IPs 2607:f8b0:4023:2801::1a and 192.178.128.26.

Host alt2.aspmx.l.google.com has IPs 2a00:1450:400b:c02::1a and 172.253.116.27.

Host alt3.aspmx.l.google.com has IPs 2a00:1450:4001:c21::1b and 142.251.127.27.

Host alt4.aspmx.l.google.com has IPs 2a00:1450:4025:c01::1a and 142.250.147.27.