203.112.72.0/21

AS38031 · OptiMax Communication Ltd.

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Summary

Country	Bangladesh
Domain	optimaxbd.net
ASN	AS38031
Registry	APNIC
ID	OPTIMAX

WHOIS Details

inetnum:        203.112.72.0 - 203.112.79.255
netname:        OPTIMAX
descr:          OptiMax COmmunication Ltd
descr:          (Internet Service Provider)
descr:          House-90, Road-23, Block-A
descr:          Banani, Dhaka
descr:          Bangladesh
country:        BD
org:            ORG-OCL2-AP
admin-c:        ONA10-AP
tech-c:         ONA10-AP
abuse-c:        AO231-AP
status:         ALLOCATED PORTABLE
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:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-BD-OPTIMAX
mnt-routes:     MAINT-BD-OPTIMAX
mnt-irt:        IRT-OPTIMAX-BD
last-modified:  2020-05-27T13:03:43Z
source:         APNIC

irt:            IRT-OPTIMAX-BD
address:        OptiMax Communication Ltd
address:        House-6, Road-28,Block-K
address:        Banani, Dhaka-1213
address:        Bangladesh
phone:          +8801711532496
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        ONA10-AP
tech-c:         ONA10-AP
auth:           # Filtered
remarks:        [email protected]
remarks:        [email protected]
remarks:        [email protected]
remarks:        [email protected]
remarks:        [email protected] was validated on 2025-08-19
mnt-by:         MAINT-BD-OPTIMAX
last-modified:  2025-11-18T00:26:32Z
source:         APNIC

organisation:   ORG-OCL2-AP
org-name:       OptiMax Communication Ltd
org-type:       LIR
country:        BD
address:        House-06, Road-28, Block-K,
address:        Banani
phone:          +88-02-9853356
fax-no:         +88-02-9841744
e-mail:         [email protected]
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:08Z
source:         APNIC

role:           ABUSE OPTIMAXBD
country:        ZZ
address:        OptiMax Communication Ltd
address:        House-6, Road-28,Block-K
address:        Banani, Dhaka-1213
address:        Bangladesh
phone:          +8801711532496
e-mail:         [email protected]
admin-c:        ONA10-AP
tech-c:         ONA10-AP
nic-hdl:        AO231-AP
remarks:        Generated from irt object IRT-OPTIMAX-BD
remarks:        [email protected] was validated on 2025-08-19
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-19T16:21:55Z
source:         APNIC

role:           Optimax network administrator
address:        House-06, Road-28, Block-K, Banani
country:        BD
phone:          +88-02-8853356
e-mail:         [email protected]
admin-c:        ONA10-AP
tech-c:         ONA10-AP
nic-hdl:        ONA10-AP
mnt-by:         MAINT-BD-OPTIMAX
last-modified:  2017-01-04T07:38:23Z
source:         APNIC

route:          203.112.72.0/21
descr:          203.112.72.0/24 server group
descr:          203.112.73.0/24 to 203.112.76.0/24 Cable modem user group-1
descr:          203.112.77.0/24 to 203.112.79.0/24 server group
origin:         AS38031
mnt-by:         MAINT-BD-OPTIMAX
last-modified:  2009-06-29T06:01:36Z
source:         APNIC

Overlapping Ranges

BGP prefixes that are contained by 203.112.72.0/21

Range	ASN	Company	Num of IPs
203.112.72.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.73.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.74.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.75.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.76.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.77.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.78.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.79.0/24	AS38031	Md. Emdadul Hoque Molla	256

Nearby Ranges

BGP prefixes that overlap with 203.112.0.0/16

Range	ASN	Company	Num of IPs
203.112.224.0/19	AS4637	Telstra Global Internet Services Network Blocks	8,192
203.112.192.0/19	AS45588	Internet Access & Telecom Carrier Service Provider.	8,192
203.112.160.0/19	AS9226	1-NET ISP Services Network.	8,192
203.112.32.0/19	AS7522	STNet, Incorporated	8,192
203.112.0.0/19	AS4685	ASAHI Net,Inc.	8,192
203.112.192.0/19	AS17494	Internet Access & Telecom Carrier Service Provider.	8,192
203.112.136.0/21	AS17439	Netmagic IT Services Pvt Ltd	2,048
203.112.64.0/21	AS2907	Chikushi Jogakuen University Network,	2,048
203.112.132.0/22	AS140641	YOTTA NETWORK SERVICES PRIVATE LIMITED	1,024
203.112.156.0/22	AS140641	YOTTA NETWORK SERVICES PRIVATE LIMITED	1,024
203.112.77.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.78.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.79.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.76.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.75.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.231.0/24	AS4637	Telstra Global Internet Services Network /24 Block	256
203.112.235.0/24	AS4637	Telstra Global Internet Services Network /24 Block	256
203.112.236.0/24	AS4637	Telstra Global Internet Services Network /24 Block	256
203.112.237.0/24	AS4637	Telstra Global Internet Services Network /24 Block	256
203.112.74.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.73.0/24	AS38031	Md. Emdadul Hoque Molla	256
203.112.72.0/24	AS38031	Md. Emdadul Hoque Molla	256

Hosted domains

There are 61 domain names hosted across 10 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.112.72.51	optimaxbd.net	30
203.112.72.73	techbrobd.com	7
203.112.72.76	yccgroupbd.com	1
203.112.72.18	optimax.net.bd	1

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

380 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.112.79.247	AS38031 OptiMax Communication Ltd.	`0.41ms` from Dhaka, BD
203.112.76.21	AS38031 OptiMax Communication Ltd.	`0.33ms` from Dhaka, BD
203.112.77.58	AS38031 OptiMax Communication Ltd.	`0.34ms` from Dhaka, BD
203.112.75.153	AS38031 OptiMax Communication Ltd.	`0.34ms` from Dhaka, BD
203.112.73.73	AS38031 OptiMax Communication Ltd.	`0.36ms` from Dhaka, BD
203.112.74.85	AS38031 OptiMax Communication Ltd.	`0.37ms` from Dhaka, BD
203.112.72.65	AS38031 OptiMax Communication Ltd.	`0.32ms` from Dhaka, BD

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
62.74.219.213	AS12361 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`0.99ms` from Athens, GR
71.66.61.5	AS13343 Charter Communications Inc	`4.95ms` from Atlanta, US
52.26.250.165	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
186.61.130.181	AS22927 Telefonica de Argentina	`1.85ms` from Buenos Aires, AR
98.46.44.245	AS7922 Comcast Cable Communications, LLC	`6.08ms` from Chicago, US
96.18.3.181	AS11492 CABLE ONE, INC.	`12.56ms` from Dallas, US
65.99.219.165	AS17378 TierPoint, LLC	`0.55ms` from Dallas, US
34.174.96.149	AS396982 Google LLC	`0.12ms` from Dallas, US
73.95.41.149	AS7922 Comcast Cable Communications, LLC	`2.44ms` from Denver, US
116.118.11.213	AS7602 Sai gon Postel Corporation	`0.18ms` from Hanoi, VN
123.179.136.5	AS4134 CHINANET-BACKBONE	`5.04ms` from Hohhot, CN
13.42.105.133	AS16509 Amazon.com, Inc.	`0.70ms` from London, GB
78.7.123.245	AS8968 BT Italia S.p.A.	`5.84ms` from Milan, IT
67.53.142.101	AS10796 Charter Communications Inc	`0.76ms` from Milwaukee, US
74.206.230.53	AS27257 Webair Internet Development Company Inc.	`0.94ms` from New York City, US
201.10.29.133	AS8167 V tal	`7.02ms` from Novo Hamburgo, BR
4.79.145.5	AS3356 Level 3 Parent, LLC	`2.79ms` from Orlando, US
200.233.0.245	AS7465 PROCERGS - Cia de Processamento de Dados do RGS	`0.78ms` from Porto Alegre, BR
73.241.126.133	AS7922 Comcast Cable Communications, LLC	`5.46ms` from San Jose, US
73.160.81.69	AS7922 Comcast Cable Communications, LLC	`4.65ms` from Secaucus, US
183.115.219.101	AS4766 Korea Telecom	`2.13ms` from Seoul, KR
175.115.132.101	AS9318 SK Broadband Co Ltd	`3.13ms` from Seoul, KR
20.17.58.53	AS8075 Microsoft Corporation	`1.40ms` from Singapore, SG
106.1.89.117	AS38841 kbro CO. Ltd.	`7.02ms` from Taipei, TW
124.144.122.133	AS9824 JCOM Co., Ltd.	`10.64ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 -f3 203.112.77.225

traceroute to 203.112.77.225 (203.112.77.225): 64 hops max, 52 byte packets

3 [AS9498] 122.185.239.109 1.873 ms

4 [] 116.119.158.114 4.18 ms

5 [AS9498] 125.16.124.90 54.827 ms

6 *

7 *

8 [AS38031] 203.112.77.225 56.002 ms

Measurement taken from

IPinfo ProbeNet in Kolkata, IN

On December 14th 2025

What are IP address ranges?

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