203.81.37.0/24

AS4637  ·  Telstra Global

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Summary

Country Singapore
Domain telstra.com
ASN AS4637
Registry APNIC
ID TELSTRAGLOBAL

WHOIS Details

inetnum:        203.81.37.0 - 203.81.37.255
netname:        TELSTRAGLOBAL
descr:          Telstra Global Internet Services Network Blocks
country:        SG
org:            ORG-TIL3-AP
admin-c:        TI55-AP
tech-c:         TI54-AP
abuse-c:        AT940-AP
status:         ALLOCATED PORTABLE
geofeed:        https://geofeed.telstraglobal.net/geofeed.csv
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:        --------------------------------------------------------
remarks:        Service Provider Block
mnt-by:         APNIC-HM
mnt-routes:     MAINT-HK-TI
mnt-lower:      MAINT-HK-TI
mnt-irt:        IRT-TELSTRA-INTL-HK
last-modified:  2025-05-30T04:28:19Z
source:         APNIC

irt:            IRT-TELSTRA-INTL-HK
address:        Internet and Private Networks
address:        Telecom House,
address:        3 Gloucester Rd,
address:        Wanchai, Hong Kong.
e-mail:         IRT@team.telstra.com
abuse-mailbox:  abuse@telstra.net
admin-c:        TI55-AP
tech-c:         TI54-AP
auth:           # Filtered
remarks:        irt@team.telstra.com was validated on 2025-07-15
remarks:        abuse@telstra.net was validated on 2025-07-15
mnt-by:         MAINT-HK-TI
last-modified:  2025-09-04T05:54:39Z
source:         APNIC

organisation:   ORG-TIL3-AP
org-name:       Telstra International Limited
org-type:       LIR
country:        HK
address:        19/F Telecom House
address:        3 Gloucester Road
phone:          +852-2983-4820
fax-no:         +852-2597-5896
e-mail:         ipNOC@team.telstra.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:55Z
source:         APNIC

role:           ABUSE TELSTRAINTLHK
country:        ZZ
address:        Internet and Private Networks
address:        Telecom House,
address:        3 Gloucester Rd,
address:        Wanchai, Hong Kong.
phone:          +000000000
e-mail:         IRT@team.telstra.com
admin-c:        TI55-AP
tech-c:         TI54-AP
nic-hdl:        AT940-AP
remarks:        Generated from irt object IRT-TELSTRA-INTL-HK
remarks:        irt@team.telstra.com was validated on 2025-07-15
remarks:        abuse@telstra.net was validated on 2025-07-15
abuse-mailbox:  abuse@telstra.net
mnt-by:         APNIC-ABUSE
last-modified:  2025-07-15T22:42:45Z
source:         APNIC

person:         Telstra-International IPNOC
nic-hdl:        TI54-AP
e-mail:         ipnoc@team.telstra.com
address:        Telecom House,
address:        3 Gloucester Rd,
address:        Wanchai, Hong Kong.
phone:          +852 2983 3388
fax-no:         +852 2597 5896
country:        HK
remarks:        For SPAM/ABUSE Issue: ipnoc@team.telstra.com
remarks:        For Network Related Issue: ipnoc@team.telstra.com
mnt-by:         MAINT-AP-ANC
last-modified:  2019-09-11T04:30:26Z
source:         APNIC

person:         Telstra-International IPNPD
address:        14/F Telecom House, 3 Gloucester Road, Wanchai
country:        HK
phone:          +852 2983 3388
fax-no:         +852 2597 5896
e-mail:         ipnpd@team.telstra.com
nic-hdl:        TI55-AP
abuse-mailbox:  abuse@intl.telstra.com
mnt-by:         MAINT-HK-TI
last-modified:  2019-04-15T01:08:26Z
source:         APNIC

route:          203.81.37.0/24
origin:         AS4637
descr:          Telstra International Limited 19/F Telecom House 3 Gloucester Road
mnt-by:         MAINT-HK-TI
last-modified:  2023-08-11T06:15:31Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.81.0.0/16

Range ASN Company Num of IPs
203.81.128.0/19 AS17608 ABN 8,192
203.81.64.0/19 AS9988 Myanma Post and Telecommunication 8,192
203.81.208.0/20 AS206805 LLC T1Cloud 4,096
203.81.112.0/20 AS24289 Kagawa Broad Network corp. 4,096
203.81.192.0/20 AS22773 4,096
203.81.252.0/22 AS4656 Tiglion Consultancy Company Limited 1,024
203.81.12.0/22 AS23616 Internet Data Center 1,024
203.81.240.0/22 AS17747 Siti Networks Ltd 1,024
203.81.167.0/24 AS131322 Yatanarpon Teleport, Internet Service Provider 256
203.81.168.0/24 AS18399 Yatanarpon Teleport, Colocation 256
203.81.169.0/24 AS18399 Yatanarpon Teleport 256
203.81.170.0/24 AS131322 Yatanarpon Teleport, Infrastructure 256
203.81.240.0/24 AS17747 SITI NETWORKS LIMITED 256
203.81.241.0/24 AS17747 SITI NETWORKS LIMITED 256
203.81.242.0/24 AS17747 SITI NETWORKS LIMITED 256
203.81.243.0/24 AS17747 SITI NETWORKS LIMITED 256
203.81.3.0/24 AS23764 Chinatelecom Global network 256
203.81.34.0/24 AS4628 Pacific Internet Pte Ltd 256
203.81.36.0/24 AS4628 Pacific Internet Pte Ltd 256
203.81.4.0/24 AS23764 Chinatelecom Next Carrying Network backbone 256
203.81.6.0/24 AS23764 Chinatelecom Next Carrying Network backbone 256
203.81.0.0/24 AS23764 Chinatelecom Next Carrying Network backbone 256
203.81.99.0/24 AS9329 Sri Lanka Telecom Ltd 256
203.81.102.0/24 AS9329 Sri Lanka Telecom Ltd 256
203.81.160.0/24 AS18399 Yatanarpon Teleport, ISP Service 256
203.81.161.0/24 AS18399 Yatanarpon Teleport, Infrastructure 256
203.81.162.0/24 AS18399 Yatanarpon Teleport, Colocation 256
203.81.163.0/24 AS18399 Yatanarpon Teleport, ISP Service 256
203.81.164.0/24 AS18399 Yatanarpon Teleport, Public Subnets 256
203.81.165.0/24 AS18399 Yatanarpon Teleport 256

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
203.81.37.136 kaisin.com.sg 1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
86.81.92.216 AS1136 KPN B.V. 1.63ms from Amsterdam, NL
185.12.122.136 AS9150 Interconnect 2.60ms from Amsterdam, NL
80.107.51.72 AS6799 Ote SA (Hellenic Telecommunications Organisation) 1.08ms from Athens, GR
107.11.155.72 AS10796 Charter Communications Inc 8.57ms from Columbus, US
212.110.210.248 AS20676 Plusnet GmbH 5.77ms from Duesseldorf, DE
164.132.228.216 AS16276 OVH SAS 2.98ms from Frankfurt am Main, DE
91.51.53.200 AS3320 Deutsche Telekom AG 7.66ms from Frankfurt am Main, DE
14.170.2.104 AS45899 VNPT Corp 2.20ms from Hanoi, VN
50.28.66.56 AS32244 Liquid Web, L.L.C 0.15ms from Lansing, US
68.119.130.8 AS20115 Charter Communications LLC 4.76ms from Los Angeles, US
132.208.73.72 AS376 Reseau d'Informations Scientifiques du Quebec (RISQ Inc.) 1.43ms from Montreal, CA
119.241.116.184 AS2518 BIGLOBE Inc. 8.08ms from Osaka, JP
172.6.110.232 AS7018 AT&T Enterprises, LLC 17.91ms from San Antonio, US
3.115.17.120 AS16509 Amazon.com, Inc. 0.28ms from Tokyo, JP
122.132.6.120 AS2518 BIGLOBE Inc. 5.70ms from Tokyo, JP
131.109.15.200 AS14464 Rhode Island Network for Educ. Technology 3.98ms from Boston, US
154.178.140.248 AS8452 TE-AS 5.17ms from Cairo, EG
54.194.152.200 AS16509 Amazon.com, Inc. 0.16ms from Dublin, IE
54.36.14.216 AS16276 OVH SAS 0.30ms from Gravelines, FR
123.30.191.216 AS45899 VNPT Corp 0.55ms from Hanoi, VN
168.76.233.88 AS137951 ASLINE LIMITED 0.70ms from Hong Kong, HK
128.111.18.8 AS131 University of California, Santa Barbara 2.62ms from Los Angeles, US
201.145.115.184 AS8151 UNINET 1.49ms from Mexico City, MX
200.85.152.88 AS52270 ELSERVER S.R.L 5.69ms from Rosario, AR
114.207.211.168 AS9318 SK Broadband Co Ltd 3.57ms from Seoul, KR

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

$
traceroute -a -n -q1 -f5 -m9 203.81.37.31
traceroute to 203.81.37.31 (203.81.37.31): 9 hops max, 52 byte packets
5 [] 80.81.192.246 22.56 ms
6 [AS4637] 202.84.178.70 22.713 ms
7 *
8 *
9 *
Measurement taken from IPinfo ProbeNet in Zuerich, CH
On

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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