203.112.72.0/22

AS38031 · OptiMax Communication Ltd.

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Summary

Country	Bangladesh
Domain	optimaxbd.net
ASN	AS38031
Parent Range	203.112.72.0/21
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:         emdad@optimaxbd.net
abuse-mailbox:  emdad@optimaxbd.net
admin-c:        ONA10-AP
tech-c:         ONA10-AP
auth:           # Filtered
remarks:        emdad@optimaxbd.net
remarks:        emdad@optimaxbd.net
remarks:        emdad@optimaxbd.net
remarks:        emdad@optimaxbd.net
remarks:        emdad@optimaxbd.net 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:         info@optimaxbd.net
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:         emdad@optimaxbd.net
admin-c:        ONA10-AP
tech-c:         ONA10-AP
nic-hdl:        AO231-AP
remarks:        Generated from irt object IRT-OPTIMAX-BD
remarks:        emdad@optimaxbd.net was validated on 2025-08-19
abuse-mailbox:  emdad@optimaxbd.net
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:         emdad@optimaxbd.net
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 contain 203.112.72.0/22

Range	ASN	Company	Num of IPs
203.112.72.0/21	AS38031	OptiMax COmmunication Ltd	2,048

BGP prefixes that are contained by 203.112.72.0/22

Range	ASN	Company	Num of IPs
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
203.112.72.0/24	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
203.112.72.0/21	AS38031	OptiMax COmmunication 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

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
203.112.74.85	AS38031 OptiMax Communication Ltd.	`0.38ms` from Dhaka, BD
203.112.72.165	AS38031 OptiMax Communication Ltd.	`0.32ms` from Dhaka, BD
203.112.73.73	AS38031 OptiMax Communication Ltd.	`0.35ms` from Dhaka, BD
203.112.75.241	AS38031 OptiMax Communication Ltd.	`0.31ms` 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
75.53.73.38	AS7018 AT&T Enterprises, LLC	`11.90ms` from Atlanta, US
104.14.20.246	AS7018 AT&T Enterprises, LLC	`14.32ms` from Atlanta, US
5.204.148.22	AS213155 Yettel Hungary Ltd.	`12.81ms` from Budapest, HU
196.117.44.22	AS36925 MEDITELECOM	`3.24ms` from Casablanca, MA
24.13.71.6	AS7922 Comcast Cable Communications, LLC	`5.85ms` from Chicago, US
34.241.249.70	AS16509 Amazon.com, Inc.	`0.16ms` from Dublin, IE
106.55.93.150	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.23ms` from Guangzhou, CN
101.33.124.86	AS132203 Tencent Building, Kejizhongyi Avenue	`0.36ms` from Hong Kong, HK
43.216.223.182	AS16509 Amazon.com, Inc.	`0.88ms` from Kuala Lumpur, MY
185.85.186.198	AS208802 Netavo Global Data Services Ltd	`0.82ms` from London, GB
45.147.175.22	AS136787 PacketHub S.A.	`0.48ms` from Los Angeles, US
47.144.66.102	AS5650 Frontier Communications of America, Inc.	`3.83ms` from Los Angeles, US
201.64.72.182	AS4230 CLARO S.A.	`1.00ms` from Osasco, BR
14.42.194.134	AS4766 Korea Telecom	`6.59ms` from Seoul, KR
219.231.55.134	AS4538 China Education and Research Network Center	`14.26ms` from Shanghai, CN
175.41.131.22	AS16509 Amazon.com, Inc.	`0.13ms` from Singapore, SG
20.17.58.54	AS8075 Microsoft Corporation	`1.54ms` from Singapore, SG
77.69.22.86	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`0.96ms` from Athens, GR
203.172.219.230	AS23974 Ministry of education	`3.03ms` from Bangkok, TH
213.177.64.70	AS13226 CYBERNET SA	`0.18ms` from Brussels, BE
178.32.45.214	AS16276 OVH SAS	`0.08ms` from Gravelines, FR
2.61.121.230	AS12389 PJSC Rostelecom	`8.62ms` from Krasnoyarsk, RU
67.218.246.38	AS15704 XTRA TELECOM S.A.	`9.41ms` from Madrid, ES
174.137.153.150	AS27257 Webair Internet Development Company Inc.	`0.97ms` from New York City, US
69.114.95.6	AS6128 Cablevision Systems Corp.	`9.18ms` from New York City, US

Traceroute

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

traceroute -a -n -q1 -f3 203.112.75.97

traceroute to 203.112.75.97 (203.112.75.97): 64 hops max, 52 byte packets

3 [] 103.161.216.9 0.332 ms

4 [AS38031] 203.112.75.97 0.403 ms

Measurement taken from

IPinfo ProbeNet in Dhaka, BD

On January 18th 2026

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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