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IP address lookup and information tool

203.55.21.31



Here you can find all lookup results for public IP address 203.55.21.31 owned by Campaign Monitor Pty. This includes the type of address, DNS lookup information, ISP and location details. At the bottom of the page you can find more functions like a detailed location map, abuse report, WHOIS information and an e-mail server blacklist check.



When designing the Internet addressing architecture, the Internet Engineering Task Force (IETF) and the Internet Assigned Numbers Authority (IANA) have reserved various Internet Protocol (IP) addresses and networks of various sizes (/8, /24, etc.) for special purposes or for future use. The rest of the /8 network blocks, where for instance 203.55.21.0/24 is a part of, were assigned to single organizations or groups of related organizations. This was done by the Internet Corporation for Assigned Names and Numbers (ICANN) or through a regional Internet registry, or in short a RIR.
As IPv4 address exhaustion has advanced to its final stages, some organizations have returned their allocated blocks to assist in the delay of the exhaustion date.


Technical details

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IP address203.55.21.31
Address typePublic
Protocol versionIPv4
Network classClass C
Conversions3409384735 (decimal / iplong)
cb37151f (hex / base 16)
203552131 (numeric)
Reverse DNS31.21.55.203.in-addr.arpa
Hostnamemx31.a.outbound.createsend.com
Reverse lookupmx31.a.outbound.createsend.com
ISP Campaign Monitor Pty
CompanyCampaign Monitor Pty


Location details

CountryAustraliaAustralia

Latitude-33.493999 (33°29'38.4" S)
Longitude143.210403 (143°12'37.45" E)

203.55.21.31 location


Websites hosted on this IP address

  • There are no websites found hosted on this public IP address

WHOIS lookup

WHOIS is an international recognized protocol to query worldwide databases that store information on internet resources. It was documented in RFC 3912 by the Internet Society back in 2004, but is still current. It has been reported that the protocol will soon be obsolete due to privacy reasons, and will be replaced with a less transparent system.

[Querying whois.apnic.net]
[whois.apnic.net]
[whois.apnic.net]
Whois data copyright terms http://www.apnic.net/db/dbcopyright.html

Information related to '203.55.21.0 - 203.55.21.255'

Abuse contact for '203.55.21.0 - 203.55.21.255' is 'abuse@campaignmonitor.com'

inetnum: 203.55.21.0 - 203.55.21.255
netname: CAMPAIGNMONITOR-AU
descr: CAMPAIGN MONITOR PTY LTD
country: AU
org: ORG-CMPL1-AP
admin-c: CMPL2-AP
tech-c: CMPL2-AP
mnt-by: APNIC-HM
mnt-routes: MAINT-AU-CAMPAIGN
mnt-irt: IRT-CAMPAIGN-AU
status: ASSIGNED PORTABLE
remarks: Email Service Provider (ESP)
remarks: http://www.campaignmonitor.com/
remarks: --------------------------------------------------------
remarks: To report network abuse, please contact mnt-irt
remarks: For troubleshooting, please contact tech-c and admin-c
remarks: Report invalid contact via www.apnic.net/invalidcontact
remarks: --------------------------------------------------------
last-modified: 2017-08-29T23:13:30Z
source: APNIC

irt: IRT-CAMPAIGN-AU
address: CAMPAIGN MONITOR PTY LTD
address: L38/201 Elizabeth Street, Sydney
e-mail: abuse@campaignmonitor.com
abuse-mailbox: abuse@campaignmonitor.com
admin-c: CMPL2-AP
tech-c: CMPL2-AP
auth: # Filtered
mnt-by: MAINT-AU-CAMPAIGN
last-modified: 2017-07-24T03:10:58Z
source: APNIC

organisation: ORG-CMPL1-AP
org-name: CAMPAIGN MONITOR PTY LTD
country: AU
address: L38, 201 Elizabeth Street
phone: +61-28518-7100
fax-no: +61-29521-5316
e-mail: nie@campaignmonitor.com
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2017-08-20T22:55:43Z
source: APNIC

role: CAMPAIGN MONITOR PTY LTD
address: L38/201 Elizabeth Street, Sydney
country: AU
phone: +61-2-9521-5312
e-mail: abuse@campaignmonitor.com
admin-c: CMPL2-AP
tech-c: CMPL2-AP
nic-hdl: CMPL2-AP
mnt-by: MAINT-AU-CAMPAIGN
remarks: -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Send all spam and abuse reports to
abuse@campaignmonitor.com. Please include detailed
information such as full message headers with times
in UTC.
-
Send all network related issues such as routing to
netops@campaignmonitor.com.
-+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+
last-modified: 2017-07-24T03:12:29Z
source: APNIC

This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-UK3)