doubletree.co - robtex.com

doubletree.co

DNSSEC⚠️ Not signed
A167.187.200.18🇺🇸 AS26529167.187.200.0/22 AC_HILTONWORL
PTRftcrdf-nonsecure.hilton.com
PTRrichardsondallas.hilton.com
PTRuksupply.hilton.com
NSns1.markmonitor.com ⭐
A2620:10a:80a8::1🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
A149.112.160.1🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
NSns2.markmonitor.com
A2001:67c:10b8::1🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net
PTRns2.markmonitor.com
A176.97.158.1🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net
PTRns2.markmonitor.com
NSns3.markmonitor.com
A2620:10a:80a9::1🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
A149.112.161.1🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
NSns4.markmonitor.com
A2001:67c:1bc::1🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast
PTRns1.markmonitor.com
A192.174.68.1🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net
PTRns1.markmonitor.com
NSns5.markmonitor.com ⚠️ Not in parent delegation
A2620:10a:80a8::2🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
A149.112.160.2🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
NSns6.markmonitor.com ⚠️ Not in parent delegation
A2001:67c:10b8::3🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net
PTRns6.markmonitor.com
A176.97.158.3🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net
PTRns6.markmonitor.com
NSns7.markmonitor.com ⚠️ Not in parent delegation
A2620:10a:80a9::2🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
A149.112.161.2🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
SOAns1.markmonitor.comhostmaster@markmonitor.com 2024-01-25 #1

co

DNSSEC🔒 Signed (DS record present)
NSns0.centralnic.net ⭐
NSa.registrydns.co
NSb.registrydns.co
NSc.registrydns.co
NSd.registrydns.co
SOAns0.centralnic.nethostmaster@centralnic.net serial=1759720092

Same first word

doubletree.in
doubletree.mobi
doubletree.contact
doubletree.com.cn
doubletree.cn
doubletree.ch
doubletree.ro
doubletree.travel
doubletree.jobs
doubletree.deal
doubletree.us
doubletree.amsterdam
doubletree.co
doubletree.miami
doubletree.now
doubletree.co.at
doubletree.co.in
doubletree.spa
doubletree.pl
doubletree.au
doubletree.com
doubletree.at
doubletree.istanbul
doubletree.com.pe
doubletree.compare
doubletree.uk
doubletree.ae
doubletree.sc
doubletree.info
doubletree.jp
doubletree.biz
doubletree.com.au

DNS History

15 records (8 active, 7 former)

20162017201820192020202120222023202420252026NSns1.markmonitor.comns2.markmonitor.comns3.markmonitor.comns4.markmonitor.comns5.markmonitor.comns6.markmonitor.comns7.markmonitor.comns1.netnames.netns2.netnames.netns5.netnames.netns6.netnames.netMXrelay1.netnames.netrelay2.netnames.netA167.187.200.18185.26.230.129
●NSns1.markmonitor.com2026-07-27 → 2026-07-30 · 3 obs
○ 2017-04-19 22:53:28
● 2026-07-27 12:45:28
● 2026-07-30 07:30:28
○NSns1.netnames.net2015-08-15 → 2017-04-19 · 4 obs
● 2015-08-15 00:33:18
● 2017-04-19 22:53:28
○ 2026-07-27 12:45:28
○ 2026-07-30 07:30:28
●NSns2.markmonitor.com2026-07-27 → 2026-07-30 · 3 obs
○ 2017-04-19 22:53:28
● 2026-07-27 12:45:28
● 2026-07-30 07:30:28
○NSns2.netnames.net2015-08-15 → 2017-04-19 · 4 obs
● 2015-08-15 00:33:18
● 2017-04-19 22:53:28
○ 2026-07-27 12:45:28
○ 2026-07-30 07:30:28
●NSns3.markmonitor.com2026-07-27 → 2026-07-30 · 3 obs
○ 2017-04-19 22:53:28
● 2026-07-27 12:45:28
● 2026-07-30 07:30:28
●NSns4.markmonitor.com2026-07-27 → 2026-07-30 · 3 obs
○ 2017-04-19 22:53:28
● 2026-07-27 12:45:28
● 2026-07-30 07:30:28
●NSns5.markmonitor.com2026-07-27 → 2026-07-30 · 3 obs
○ 2017-04-19 22:53:28
● 2026-07-27 12:45:28
● 2026-07-30 07:30:28
○NSns5.netnames.net2015-08-15 → 2017-04-19 · 4 obs
● 2015-08-15 00:33:18
● 2017-04-19 22:53:28
○ 2026-07-27 12:45:28
○ 2026-07-30 07:30:28
●NSns6.markmonitor.com2026-07-27 → 2026-07-30 · 3 obs
○ 2017-04-19 22:53:28
● 2026-07-27 12:45:28
● 2026-07-30 07:30:28
○NSns6.netnames.net2015-08-15 → 2017-04-19 · 4 obs
● 2015-08-15 00:33:18
● 2017-04-19 22:53:28
○ 2026-07-27 12:45:28
○ 2026-07-30 07:30:28
●NSns7.markmonitor.com2026-07-27 → 2026-07-30 · 3 obs
○ 2017-04-19 22:53:28
● 2026-07-27 12:45:28
● 2026-07-30 07:30:28
○MXrelay1.netnames.net2015-08-15 → 2017-04-19 · 4 obs
● 2015-08-15 00:33:18
● 2017-04-19 22:53:28
○ 2026-07-27 12:45:28
○ 2026-07-30 07:30:28
○MXrelay2.netnames.net2015-08-15 → 2017-04-19 · 4 obs
● 2015-08-15 00:33:18
● 2017-04-19 22:53:28
○ 2026-07-27 12:45:28
○ 2026-07-30 07:30:28
●A167.187.200.182026-07-27 → 2026-07-30 · 3 obs
○ 2017-04-19 22:53:28
● 2026-07-27 12:45:28
● 2026-07-30 07:30:28
○A185.26.230.1292015-08-15 → 2017-04-19 · 4 obs
● 2015-08-15 00:33:18
● 2017-04-19 22:53:28
○ 2026-07-27 12:45:28
○ 2026-07-30 07:30:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coa.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co-
doubletree.cons1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com-

✅ Authoritative Response

Server:149.112.161.1

NS records: ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for doubletree.co (unsigned zone)

⏱️ Timing

Total: 201ms | Queries: -

📄 Records

TypeCountSample Data
A1167.187.200.18
NS7ns1.markmonitor.com, ns2.markmonitor.com...
SOA1ns1.markmonitor.com hostmaster.markmonit

Analysis

IP Addresses

doubletree.co points to a single IP number: 167.187.200.18.

Additional host names — hamptoninncheckin.com, h2bringit.com, hometwohotel.co.uk and two others — share IP numbers with doubletree.co.

Name Servers

DNS for doubletree.co is handled by 7 name servers: ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com and 4 others.

doubletree.co partially shares its NS delegation with several other domains, including primex.com, could.us, calvinklein.mobi and two others.

The name servers ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com and ns7.markmonitor.com are often found in use alongside these name servers.

Host names with two IP numbers:

ns1.markmonitor.com has two IP addresses: 149.112.160.1 and 2620:10a:80a8::1.

ns2.markmonitor.com has two IP addresses: 176.97.158.1 and 2001:67c:10b8::1.

ns3.markmonitor.com has two IP addresses: 149.112.161.1 and 2620:10a:80a9::1.

ns4.markmonitor.com has two IP addresses: 192.174.68.1 and 2001:67c:1bc::1.

ns5.markmonitor.com has two IP addresses: 149.112.160.2 and 2620:10a:80a8::2.

ns6.markmonitor.com has two IP addresses: 176.97.158.3 and 2001:67c:10b8::3.

ns7.markmonitor.com has two IP addresses: 149.112.161.2 and 2620:10a:80a9::2.