duplexcsa.com - robtex.com

duplexcsa.com

DNSSEC⚠️ Not signed
A2606:4700:3036::6815:41d6🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:a715🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.65.214Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.167.21🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSrob.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b8c🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrob.ns.cloudflare.com
A2803:f800:50::6ca2:c18c🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRrob.ns.cloudflare.com
A2a06:98c1:50::ac40:218c🇺🇸 Cloudflare2a06:98c1:50::/45
PTRrob.ns.cloudflare.com
A108.162.193.140🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrob.ns.cloudflare.com
A172.64.33.140🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrob.ns.cloudflare.com
A173.245.59.140🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrob.ns.cloudflare.com
NSrobin.ns.cloudflare.com
A2606:4700:50::adf5:3ada🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrobin.ns.cloudflare.com
A2803:f800:50::6ca2:c0da🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRrobin.ns.cloudflare.com
A2a06:98c1:50::ac40:20da🇺🇸 Cloudflare2a06:98c1:50::/45
PTRrobin.ns.cloudflare.com
A108.162.192.218🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrobin.ns.cloudflare.com
A172.64.32.218🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrobin.ns.cloudflare.com
A173.245.58.218🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrobin.ns.cloudflare.com
MXd205275.a.ess.uk.barracudanetworks.com ⭐
A18.133.136.186🇬🇧 Amazon18.132.0.0/14 EC2 LHR prefix
PTRmail.ess.uk.barracuda.com
A18.133.136.187🇬🇧 Amazon18.132.0.0/14 EC2 LHR prefix
PTRmail.ess.uk.barracuda.com
A18.133.136.188🇬🇧 Amazon18.132.0.0/14 EC2 LHR prefix
PTRmail.ess.uk.barracuda.com
MXd205275.b.ess.uk.barracudanetworks.com(30)
A18.133.136.186🇬🇧 Amazon18.132.0.0/14 EC2 LHR prefix
PTRmail.ess.uk.barracuda.com
A18.133.136.187🇬🇧 Amazon18.132.0.0/14 EC2 LHR prefix
PTRmail.ess.uk.barracuda.com
A18.133.136.188🇬🇧 Amazon18.132.0.0/14 EC2 LHR prefix
PTRmail.ess.uk.barracuda.com
TXTMS=ms98368806
TXT_globalsign-domain-verification=gMwOinFfDGrzExwYMJMBtZ_X_GNKQfov-OFVdJsK9d
TXTv=spf1 a ip4:87.127.18.252 ip4:176.35.175.122 include:spf.protection.outlook....
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.65.214, 172.67.167.21
IPv6 hints2606:4700:3036::6815:41d6, 2606:4700:3037::ac43:a715
SOArob.ns.cloudflare.comdns@cloudflare.com serial=2400260112

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=1775997812

Same first word

duplexcsa.com

DNS History

15 records (8 active, 7 former)

20162017201820192020202120222023202420252026NSrob.ns.cloudflare.comrobin.ns.cloudflare.comns1.livedns.co.ukns2.livedns.co.ukns3.livedns.co.ukMXd205275.a.ess.uk.barracudanetworks.comd205275.b.ess.uk.barracudanetworks.comduplexcsa.co.uk.bak-mx.uk0100.smtpbak.comduplexcsa.co.uk.pri-mx.uk0100.smtproutes.comA104.21.65.214172.67.167.212606:4700:3036::6815:41d62606:4700:3037::ac43:a715188.240.191.16188.170.125.23
○NSns1.livedns.co.uk2015-06-14 → 2020-01-25 · 4 obs
● 2015-06-14 12:16:42
● 2020-01-25 22:42:22
○ 2026-02-18 13:04:08
○ 2026-04-12 12:45:04
○NSns2.livedns.co.uk2015-06-14 → 2020-01-25 · 4 obs
● 2015-06-14 12:16:42
● 2020-01-25 22:42:22
○ 2026-02-18 13:04:08
○ 2026-04-12 12:45:04
○NSns3.livedns.co.uk2015-06-14 → 2020-01-25 · 4 obs
● 2015-06-14 12:16:42
● 2020-01-25 22:42:22
○ 2026-02-18 13:04:08
○ 2026-04-12 12:45:04
●NSrob.ns.cloudflare.com2026-02-18 → 2026-04-12 · 3 obs
○ 2020-01-25 22:42:22
● 2026-02-18 13:04:08
● 2026-04-12 12:45:04
●NSrobin.ns.cloudflare.com2026-02-18 → 2026-04-12 · 3 obs
○ 2020-01-25 22:42:22
● 2026-02-18 13:04:08
● 2026-04-12 12:45:04
●MXd205275.a.ess.uk.barracudanetworks.com2020-01-25 → 2026-04-12 · 3 obs
○ 2017-02-03 04:29:00
● 2020-01-25 22:42:22
● 2026-04-12 12:45:04
●MXd205275.b.ess.uk.barracudanetworks.com2020-01-25 → 2026-04-12 · 3 obs
○ 2017-02-03 04:29:00
● 2020-01-25 22:42:22
● 2026-04-12 12:45:04
○MXduplexcsa.co.uk.bak-mx.uk0100.smtpbak.com2015-06-14 → 2017-02-03 · 4 obs
● 2015-06-14 12:16:42
● 2017-02-03 04:29:00
○ 2020-01-25 22:42:22
○ 2026-04-12 12:45:04
○MXduplexcsa.co.uk.pri-mx.uk0100.smtproutes.com2015-06-14 → 2017-02-03 · 4 obs
● 2015-06-14 12:16:42
● 2017-02-03 04:29:00
○ 2020-01-25 22:42:22
○ 2026-04-12 12:45:04
●A104.21.65.2142026-02-18 → 2026-04-12 · 3 obs
○ 2020-01-25 22:42:22
● 2026-02-18 13:04:08
● 2026-04-12 12:45:04
●A172.67.167.212026-02-18 → 2026-04-12 · 3 obs
○ 2020-01-25 22:42:22
● 2026-02-18 13:04:08
● 2026-04-12 12:45:04
○A188.240.191.1612020-01-25 → 2020-01-25 · 4 obs
○ 2017-02-03 04:29:00
● 2020-01-25 22:42:22
○ 2026-02-18 13:04:08
○ 2026-04-12 12:45:04
●A2606:4700:3036::6815:41d62026-02-18 → 2026-04-12 · 3 obs
○ 2020-01-25 22:42:22
● 2026-02-18 13:04:08
● 2026-04-12 12:45:04
●A2606:4700:3037::ac43:a7152026-02-18 → 2026-04-12 · 3 obs
○ 2020-01-25 22:42:22
● 2026-02-18 13:04:08
● 2026-04-12 12:45:04
○A88.170.125.232015-06-14 → 2017-02-03 · 4 obs
● 2015-06-14 12:16:42
● 2017-02-03 04:29:00
○ 2020-01-25 22:42:22
○ 2026-04-12 12:45:04

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
come.gtld-servers.net, j.gtld-servers.net, m.gtld-servers.net, d.gtld-servers.net...-
duplexcsa.comrob.ns.cloudflare.com, robin.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.192.218

NS records: rob.ns.cloudflare.com, robin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for duplexcsa.com (unsigned zone)

⏱️ Timing

Total: 119ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.167.21, 104.21.65.214
AAAA22606:4700:3036::6815:41d6, 2606:4700:3037::ac43:a715
NS2rob.ns.cloudflare.com, robin.ns.cloudflare.com
MX2d205275.a.ess.uk.barracudanetworks.com (, d205275.b.ess.uk.barracudanetworks.com (
TXT3MS=ms98368806, _globalsign-domain-verification=gMwOinFf...
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1rob.ns.cloudflare.com dns.cloudflare.com

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

duplexcsa.com refers to four IP numbers: 2606:4700:3036::6815:41d6, 2606:4700:3037::ac43:a715, 104.21.65.214 and 172.67.167.21.

Other host names, for instance www.sawsamsaicatering.com, www.denisesimmons.com, x(0x78766964656f73).cam, lawla.us.com and www.ipmamn.org share IP numbers with duplexcsa.com.

Name Servers

duplexcsa.com's delegation uses two name servers: rob.ns.cloudflare.com and robin.ns.cloudflare.com.

duplexcsa.com uses the same name server setup as other domains, such as miloais88.com, dsdistribution.co.za, vcity88.net, byflou.com and footcom.co.nz.

duplexcsa.com at least partially shares name servers with other domains, including uqr.to, novapoolperu.com, usaauto24.com, ivftech.dk and easyfynt.com.

These name servers are often used with kevin.ns.cloudflare.com and peter.ns.cloudflare.com.

Host names with six IP numbers:

rob.ns.cloudflare.com points to 2606:4700:58::adf5:3b8c, 2803:f800:50::6ca2:c18c, 2a06:98c1:50::ac40:218c, 108.162.193.140, 172.64.33.140 and 173.245.59.140.

robin.ns.cloudflare.com points to 2606:4700:50::adf5:3ada, 2803:f800:50::6ca2:c0da, 2a06:98c1:50::ac40:20da, 108.162.192.218, 172.64.32.218 and 173.245.58.218.

Mail Servers

duplexcsa.com is served by two mail servers d205275.a.ess.uk.barracudanetworks.com and d205275.b.ess.uk.barracudanetworks.com.

Host names with three IP numbers

d205275.a.ess.uk.barracudanetworks.com points to: 18.133.136.186, 18.133.136.187 and 18.133.136.188

d205275.b.ess.uk.barracudanetworks.com points to: 18.133.136.186, 18.133.136.187 and 18.133.136.188

Host names that point to 18.133.136.186: d205275.a.ess.uk.barracudanetworks.com and d205275.b.ess.uk.barracudanetworks.com

Host names that point to 18.133.136.187: d205275.a.ess.uk.barracudanetworks.com and d205275.b.ess.uk.barracudanetworks.com

Host names that point to 18.133.136.188: d205275.a.ess.uk.barracudanetworks.com and d205275.b.ess.uk.barracudanetworks.com