calendar.us.com - robtex.com

calendar.us.com

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:b5d2🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:1ffa🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.31.250Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.181.210🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSbob.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b68🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbob.ns.cloudflare.com
A2803:f800:50::6ca2:c168🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRbob.ns.cloudflare.com
A2a06:98c1:50::ac40:2168🇺🇸 Cloudflare2a06:98c1:50::/45
PTRbob.ns.cloudflare.com
A108.162.193.104🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbob.ns.cloudflare.com
A172.64.33.104🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbob.ns.cloudflare.com
A173.245.59.104🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbob.ns.cloudflare.com
NScass.ns.cloudflare.com
A2606:4700:50::adf5:3a51🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcass.ns.cloudflare.com
A2803:f800:50::6ca2:c051🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRcass.ns.cloudflare.com
A2a06:98c1:50::ac40:2051🇺🇸 Cloudflare2a06:98c1:50::/45
PTRcass.ns.cloudflare.com
A108.162.192.81🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcass.ns.cloudflare.com
A172.64.32.81🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcass.ns.cloudflare.com
A173.245.58.81🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcass.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.31.250, 172.67.181.210
IPv62606:4700:3031::ac43:b5d2, 2606:4700:3037::6815:1ffa
SOAbob.ns.cloudflare.comdns@cloudflare.com serial=2399498687

us.com

DNSSEC🔒 Signed (DS record present)
A54.153.56.183🇺🇸 Amazon54.153.0.0/17 EC2 SFO prefix
NSns0.centralnic.net ⭐
NSns1.centralnic.net
NSns2.centralnic.net
NSns3.centralnic.net
NSns4.centralnic.net
MXmx-01.emailme.com ⭐
TXTv=spf1 mx -all
TXTgoogle-site-verification=TQ9DQVGZ4sDKfEbBIAiflq7ZKjGuCOC_vEpwyw_XsW8
SOAns0.centralnic.nethostmaster@centralnic.net serial=3000740750
rank #335 globally
rank #216 in the tld
This domain "us.com" is a commercial domain name which could be used by any individual or organization primarily for commercial purposes. It uses a country code top-level domain (ccTLD) for the United States, but it is not restricted to use by entities in the United States. The specific use or owner of "us.com" depends on who has registered it.WOT: SAFE (48/100)
📈 Tranco rank: #1,110

Same first word

calendar.today
calendar.pl
calendar.org
calendar.ie
calendar.in.ua
calendar.business
calendar.st
calendar.co
calendar.de.com
calendar.email
calendar.lu
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calendar.my
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calendar.org.ua
calendar.town
calendar.com.ua
calendar.plus
calendar.jo
calendar.us.com
calendar.online
calendar.com
calendar.football
calendar.biz
calendar.eu
calendar.se
calendar.at
calendar.nu
calendar.hu
calendar.by
calendar.ru
calendar.care
calendar.asia
calendar.nl
calendar.dev
calendar.tv
calendar.ua
calendar.guide
calendar.cards
calendar.bio
calendar.io
calendar.fitness
calendar.cl
calendar.life
calendar.jp
calendar.de
calendar.com.tw
calendar.dog
calendar.center

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DNS History

6 records (6 active, 0 former)

NSbob.ns.cloudflare.comcass.ns.cloudflare.comA104.21.31.250172.67.181.2102606:4700:3031::ac43:b5d22606:4700:3037::6815:1ffa
●NSbob.ns.cloudflare.com2026-03-19 → 2026-03-29 · 2 obs
● 2026-03-19 07:54:02
● 2026-03-29 14:16:32
●NScass.ns.cloudflare.com2026-03-19 → 2026-03-29 · 2 obs
● 2026-03-19 07:54:02
● 2026-03-29 14:16:32
●A104.21.31.2502026-03-19 → 2026-03-29 · 2 obs
● 2026-03-19 07:54:02
● 2026-03-29 14:16:32
●A172.67.181.2102026-03-19 → 2026-03-29 · 2 obs
● 2026-03-19 07:54:02
● 2026-03-29 14:16:32
●A2606:4700:3031::ac43:b5d22026-03-19 → 2026-03-29 · 2 obs
● 2026-03-19 07:54:02
● 2026-03-29 14:16:32
●A2606:4700:3037::6815:1ffa2026-03-19 → 2026-03-29 · 2 obs
● 2026-03-19 07:54:02
● 2026-03-29 14:16:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comh.gtld-servers.net, a.gtld-servers.net, l.gtld-servers.net, c.gtld-servers.net...-
us.comns1.centralnic.net, ns2.centralnic.net, ns3.centralnic.net, ns4.centralnic.net-
calendar.us.comcass.ns.cloudflare.com, bob.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.32.81

NS records: cass.ns.cloudflare.com, bob.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for calendar.us.com (unsigned zone)

⏱️ Timing

Total: 1100ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.181.210, 104.21.31.250
AAAA22606:4700:3037::6815:1ffa, 2606:4700:3031::ac43:b5d2
NS2bob.ns.cloudflare.com, cass.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1bob.ns.cloudflare.com dns.cloudflare.com

Analysis

IP Addresses

calendar.us.com refers to four IP numbers: 2606:4700:3031::ac43:b5d2, 2606:4700:3037::6815:1ffa, 104.21.31.250 and 172.67.181.210.

Other host names, for instance rapgold.net, shopdaytime.com, marinascarvalho.com.br, ekirilu.top and notspam.xyz share IP numbers with calendar.us.com.

Name Servers

calendar.us.com's delegation uses two name servers: bob.ns.cloudflare.com and cass.ns.cloudflare.com.

calendar.us.com uses the same name server setup as other domains, such as metershack.com, accountingclear.com, kekocity.es, jtronvision.com and fudgemoney.com.

calendar.us.com at least partially shares name servers with other domains, including kitabat.info, sjfwpt.com, nim-khi.edu.pk, mrdoge.in and atrakcjekrynicy.pl.

These name servers are often used with nitin.ns.cloudflare.com and gigi.ns.cloudflare.com.

Host names with six IP numbers:

bob.ns.cloudflare.com points to 2606:4700:58::adf5:3b68, 2803:f800:50::6ca2:c168, 2a06:98c1:50::ac40:2168, 108.162.193.104, 172.64.33.104 and 173.245.59.104.

cass.ns.cloudflare.com points to 2606:4700:50::adf5:3a51, 2803:f800:50::6ca2:c051, 2a06:98c1:50::ac40:2051, 108.162.192.81, 172.64.32.81 and 173.245.58.81.