203.158.121.0/24

AS9903 · Rajamangala Institute of Technology

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Summary

Country	Thailand
Domain	rmutt.ac.th
ASN	AS9903
Parent Range	203.158.96.0/19
Registry	APNIC
ID	RUOTTC-TH

WHOIS Details

inetnum:        203.158.96.0 - 203.158.127.255
netname:        RUOTTC-TH
descr:          Rajamangala University of Technology Thanyaburi
country:        TH
org:            ORG-RUOT2-AP
admin-c:        RUOT2-AP
tech-c:         RUOT2-AP
abuse-c:        AR1353-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-RUOTTC-TH
mnt-routes:     MAINT-RUOTTC-TH
mnt-irt:        IRT-RUOTTC-TH
last-modified:  2023-02-09T03:55:31Z
source:         APNIC

irt:            IRT-RUOTTC-TH
address:        39 Moo 1, Klong 6, Khlong Luang Pathum Thani 12110
e-mail:         noc@rmutt.ac.th
abuse-mailbox:  noc@rmutt.ac.th
admin-c:        RUOT2-AP
tech-c:         RUOT2-AP
auth:           # Filtered
remarks:        noc@rmutt.ac.th was validated on 2026-03-05
mnt-by:         MAINT-RUOTTC-TH
last-modified:  2026-03-05T03:58:27Z
source:         APNIC

organisation:   ORG-RUOT2-AP
org-name:       Rajamangala University of Technology Thanyaburi
org-type:       LIR
country:        TH
address:        39 Moo 1, Klong 6
phone:          +6625493079
e-mail:         noc@rmutt.ac.th
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:19:10Z
source:         APNIC

role:           ABUSE RUOTTCTH
country:        ZZ
address:        39 Moo 1, Klong 6, Khlong Luang Pathum Thani 12110
phone:          +000000000
e-mail:         noc@rmutt.ac.th
admin-c:        RUOT2-AP
tech-c:         RUOT2-AP
nic-hdl:        AR1353-AP
remarks:        Generated from irt object IRT-RUOTTC-TH
remarks:        noc@rmutt.ac.th was validated on 2026-03-05
abuse-mailbox:  noc@rmutt.ac.th
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-05T03:58:47Z
source:         APNIC

role:           Rajamangala University of Technology Thanyaburi Main Campus administrator
address:        39 Moo 1, Klong 6, Khlong Luang Pathum Thani 12110
country:        TH
phone:          +6625493079
e-mail:         noc@rmutt.ac.th
admin-c:        RUOT2-AP
tech-c:         RUOT2-AP
nic-hdl:        RUOT2-AP
mnt-by:         MAINT-RUOTTC-TH
last-modified:  2023-02-02T01:31:17Z
source:         APNIC

route:          203.158.96.0/19
origin:         AS9903
descr:          Rajamangala University of Technology Thanyaburi 39 Moo 1, Klong 6
mnt-by:         MAINT-RUOTTC-TH
last-modified:  2024-09-24T08:18:00Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 203.158.121.0/24

Range	ASN	Company	Num of IPs
203.158.96.0/19	AS137546	Rajamangala University of Technology Thanyaburi	8,192
203.158.96.0/19	AS9903	Rajamangala University of Technology Thanyaburi	8,192

Nearby Ranges

BGP prefixes that overlap with 203.158.0.0/16

Range	ASN	Company	Num of IPs
203.158.96.0/19	AS137546	Rajamangala University of Technology Thanyaburi	8,192
203.158.32.0/19	AS7545	iiNet Limited	8,192
203.158.96.0/19	AS9903	Rajamangala University of Technology Thanyaburi	8,192
203.158.0.0/21	AS55545	Suranaree University of Technology	2,048
203.158.24.0/21	AS45960	YTL Communications Sdn Bhd	2,048
203.158.76.0/23	AS5400	BT Global Fabric customers	512
203.158.68.0/23	AS5400	BT Global Fabric customers	512
203.158.72.0/23	AS5400	BT Global Fabric customers	512

Hosted domains

There are no domains currently hosted on this ASN.

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

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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
63.131.198.24	AS26133 Frankfort Plant Board	`15.71ms` from Chicago, US
93.208.109.56	AS3320 Deutsche Telekom AG	`5.58ms` from Frankfurt am Main, DE
177.230.39.40	AS13999 Mega Cable, S.A. de C.V.	`9.47ms` from Guadalajara, MX
125.250.17.184	AS9316 DACOM-PUBNETPLUS	`1.80ms` from Incheon, KR
87.221.114.104	AS12479 Orange Espagne SA	`13.14ms` from Madrid, ES
69.201.233.248	AS12271 Charter Communications Inc	`4.83ms` from New York City, US
35.140.245.216	AS33363 Charter Communications, Inc	`9.59ms` from Orlando, US
219.117.48.232	AS18092 Kyushu Tele Communications Company	`6.47ms` from Osaka, JP
146.56.144.120	AS31898 Oracle Corporation	`0.17ms` from Seoul, KR
113.231.141.216	AS4837 CHINA UNICOM China169 Backbone	`7.73ms` from Tieling, CN
89.66.167.184	AS9141 P4 Sp. z o.o.	`6.40ms` from Warsaw, PL
86.94.76.120	AS1136 KPN B.V.	`2.47ms` from Amsterdam, NL
41.69.205.216	AS24835 Vodafone Data	`11.98ms` from Cairo, EG
210.108.28.120	AS3786 LG DACOM Corporation	`1.38ms` from Incheon, KR
175.184.191.216	AS4837 CHINA UNICOM China169 Backbone	`15.57ms` from Lanzhou, CN
89.212.18.72	AS34779 T-2, d.o.o.	`1.01ms` from Ljubljana, SI
35.237.101.88	AS396982 Google LLC	`0.12ms` from Moncks Corner, US
52.98.88.248	AS8075 Microsoft Corporation	`0.69ms` from Mumbai, IN
187.74.240.40	AS27699 TELEFÔNICA BRASIL S.A	`5.74ms` from Osasco, BR
83.214.183.56	AS12322 Free SAS	`13.53ms` from Paris, FR
3.220.120.248	AS14618 Amazon.com, Inc.	`0.18ms` from Reston, US
115.159.79.248	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.73ms` from Shanghai, CN
125.193.156.152	AS2518 BIGLOBE Inc.	`1.91ms` from Tokyo, JP
197.8.18.88	AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)	`17.13ms` from Tunis, TN
208.80.104.104	AS393586 Verscend Technologies	`0.88ms` from Atlanta, US

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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