firstcbt.com - robtex.com

firstcbt.com

DNSSEC⚠️ Not signed
A2606:4700:20::681a:41cCloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::681a:51cCloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::ac43:453aCloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.4.28Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.5.28Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.69.58Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSgina.ns.cloudflare.com ⭐
NSmax.ns.cloudflare.com
MXfirstcbt.com.1.0001.arsmtp.com ⭐
MXfirstcbt.com.2.0001.arsmtp.com(20)
TXTMS=D9289DA203C16BAA7D1E7CA2B592078F90D34DDF
TXTgoogle-site-verification=zqxHIs1UaYqiS0J86Nvm4_m3PX3UqJEpzq_fljqT-Kc
TXTv=spf1 mx include:firstcbt-com.spf.smtp25.com include:mailgun.org a:outbd-pst...
HTTPSHTTP/2 ✓ hints match
IPv4104.26.4.28, 104.26.5.28, 172.67.69.58
IPv62606:4700:20::681a:41c, 2606:4700:20::681a:51c, 2606:4700:20::ac43:453a
SOAgina.ns.cloudflare.comdns@cloudflare.com serial=2396713659

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=1771291435
WOT: SAFE (61/100)

Subdomains

mail.firstcbt.com

Same first word

firstcbt.co
firstcbt.info
firstcbt.com
firstcbt.bank
firstcbt.net

DNS History

22 records (10 active, 12 former)

20162017201820192020202120222023202420252026NSgina.ns.cloudflare.commax.ns.cloudflare.comns23.domaincontrol.comns24.domaincontrol.compdns07.domaincontrol.compdns08.domaincontrol.comMXfirstcbt.com.1.0001.arsmtp.comfirstcbt.com.2.0001.arsmtp.comcluster6.us.messagelabs.comcluster6a.us.messagelabs.comfirstcbt-com.relay1g.spamh.comfirstcbt-com.relay1h.spamh.comfirstcbt-com.relay1i.spamh.comzix01.compushare.comzix02.compushare.comA104.26.4.28104.26.5.28172.67.69.582606:4700:20::681a:41c2606:4700:20::681a:51c2606:4700:20::ac43:453a97.74.13.127
●NSgina.ns.cloudflare.com2021-11-05 → 2026-03-15 · 3 obs
○ 2017-08-17 21:23:40
● 2021-11-05 15:37:06
● 2026-03-15 01:11:48
●NSmax.ns.cloudflare.com2021-11-05 → 2026-03-15 · 3 obs
○ 2017-08-17 21:23:40
● 2021-11-05 15:37:06
● 2026-03-15 01:11:48
○NSns23.domaincontrol.com2015-08-15 → 2015-08-15 · 3 obs
● 2015-08-15 11:08:06
○ 2015-12-09 20:49:36
○ 2026-03-15 01:11:48
○NSns24.domaincontrol.com2015-08-15 → 2015-08-15 · 3 obs
● 2015-08-15 11:08:06
○ 2015-12-09 20:49:36
○ 2026-03-15 01:11:48
○NSpdns07.domaincontrol.com2015-12-09 → 2017-08-17 · 5 obs
○ 2015-08-15 11:08:06
● 2015-12-09 20:49:36
● 2017-08-17 21:23:40
○ 2021-11-05 15:37:06
○ 2026-03-15 01:11:48
○NSpdns08.domaincontrol.com2015-12-09 → 2017-08-17 · 5 obs
○ 2015-08-15 11:08:06
● 2015-12-09 20:49:36
● 2017-08-17 21:23:40
○ 2021-11-05 15:37:06
○ 2026-03-15 01:11:48
○MXcluster6.us.messagelabs.com2015-08-15 → 2017-08-17 · 4 obs
● 2015-08-15 11:08:06
● 2017-08-17 21:23:40
○ 2021-11-05 15:37:06
○ 2026-03-15 01:11:48
○MXcluster6a.us.messagelabs.com2015-08-15 → 2017-08-17 · 4 obs
● 2015-08-15 11:08:06
● 2017-08-17 21:23:40
○ 2021-11-05 15:37:06
○ 2026-03-15 01:11:48
○MXfirstcbt-com.relay1g.spamh.com2021-11-05 → 2021-11-05 · 4 obs
○ 2017-08-17 21:23:40
● 2021-11-05 15:37:06
○ 2026-02-16 23:06:16
○ 2026-03-15 01:11:48
○MXfirstcbt-com.relay1h.spamh.com2021-11-05 → 2021-11-05 · 4 obs
○ 2017-08-17 21:23:40
● 2021-11-05 15:37:06
○ 2026-02-16 23:06:16
○ 2026-03-15 01:11:48
○MXfirstcbt-com.relay1i.spamh.com2021-11-05 → 2021-11-05 · 4 obs
○ 2017-08-17 21:23:40
● 2021-11-05 15:37:06
○ 2026-02-16 23:06:16
○ 2026-03-15 01:11:48
●MXfirstcbt.com.1.0001.arsmtp.com2026-02-16 → 2026-03-15 · 3 obs
○ 2021-11-05 15:37:06
● 2026-02-16 23:06:16
● 2026-03-15 01:11:48
●MXfirstcbt.com.2.0001.arsmtp.com2026-02-16 → 2026-03-15 · 3 obs
○ 2021-11-05 15:37:06
● 2026-02-16 23:06:16
● 2026-03-15 01:11:48
○MXzix01.compushare.com2015-08-15 → 2017-08-17 · 4 obs
● 2015-08-15 11:08:06
● 2017-08-17 21:23:40
○ 2021-11-05 15:37:06
○ 2026-03-15 01:11:48
○MXzix02.compushare.com2015-08-15 → 2017-08-17 · 4 obs
● 2015-08-15 11:08:06
● 2017-08-17 21:23:40
○ 2021-11-05 15:37:06
○ 2026-03-15 01:11:48
●A104.26.4.282021-11-05 → 2026-03-15 · 3 obs
○ 2017-08-17 21:23:40
● 2021-11-05 15:37:06
● 2026-03-15 01:11:48
●A104.26.5.282021-11-05 → 2026-03-15 · 3 obs
○ 2017-08-17 21:23:40
● 2021-11-05 15:37:06
● 2026-03-15 01:11:48
●A172.67.69.582021-11-05 → 2026-03-15 · 3 obs
○ 2017-08-17 21:23:40
● 2021-11-05 15:37:06
● 2026-03-15 01:11:48
●A2606:4700:20::681a:41c2021-11-05 → 2026-03-15 · 3 obs
○ 2017-08-17 21:23:40
● 2021-11-05 15:37:06
● 2026-03-15 01:11:48
●A2606:4700:20::681a:51c2021-11-05 → 2026-03-15 · 3 obs
○ 2017-08-17 21:23:40
● 2021-11-05 15:37:06
● 2026-03-15 01:11:48
●A2606:4700:20::ac43:453a2021-11-05 → 2026-03-15 · 3 obs
○ 2017-08-17 21:23:40
● 2021-11-05 15:37:06
● 2026-03-15 01:11:48
○A97.74.13.1272015-08-15 → 2017-08-17 · 4 obs
● 2015-08-15 11:08:06
● 2017-08-17 21:23:40
○ 2021-11-05 15:37:06
○ 2026-03-15 01:11:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comj.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net, f.gtld-servers.net...-
firstcbt.comgina.ns.cloudflare.com, max.ns.cloudflare.com12 records

✅ Authoritative Response

Server: 108.162.192.117

NS records: gina.ns.cloudflare.com, max.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstcbt.com (unsigned zone)

⏱️ Timing

Total: 122ms | Queries: -

📄 Records

TypeCountSample Data
A3104.26.5.28, 104.26.4.28...
AAAA32606:4700:20::681a:51c, 2606:4700:20::ac43:453a...
NS2gina.ns.cloudflare.com, max.ns.cloudflare.com
MX2firstcbt.com.1.0001.arsmtp.com (pri: 10), firstcbt.com.2.0001.arsmtp.com (pri: 20)
TXT3MS=D9289DA203C16BAA7D1E7CA2B592078F90D34, google-site-verification=zqxHIs1UaYqiS0J...
HTTPS1{"priority":1,"target":".","alpn":["h2"]
SOA1gina.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

firstcbt.com is the parent of mail.firstcbt.com.

IP Addresses

firstcbt.com points to six IP addresses: 2606:4700:20::681a:41c, 2606:4700:20::681a:51c, 2606:4700:20::ac43:453a, 104.26.4.28, 104.26.5.28 and 172.67.69.58.

Name Servers

firstcbt.com is delegated to two name servers: gina.ns.cloudflare.com and max.ns.cloudflare.com.

Mail Servers

Two mail servers firstcbt.com.1.0001.arsmtp.com and firstcbt.com.2.0001.arsmtp.com handle firstcbt.com.