155.69.0.21
Education
Data retrieved at
Network
ASN
IP Range
Company
Nanyang Technological University
Network
NTUNET1
Using networksdb.io for network lookups.
Hostname
Not available.
AS Domain
ntu.edu.sg
Using host.io for pre-visualize domains.
Type
Education
Handle
155.69.0.0 - 155.69.255.255
Registered
2008-09-04
Last Changed
2025-08-08
View raw RDAP
{
"rdapConformance": [
"history_version_0",
"nro_rdap_profile_0",
"cidr0",
"rdap_level_0"
],
"notices": [
{
"title": "Source",
"description": [
"Objects returned came from source",
"APNIC"
]
},
{
"title": "Terms and Conditions",
"description": [
"This is the APNIC WHOIS Database query service. The objects are in RDAP format."
],
"links": [
{
"value": "https://rdap.apnic.net/ip/155.69.0.21",
"rel": "terms-of-service",
"href": "http://www.apnic.net/db/dbcopyright.html",
"type": "text/html"
}
]
},
{
"title": "Whois Inaccuracy Reporting",
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"value": "https://rdap.apnic.net/ip/155.69.0.21",
"rel": "inaccuracy-report",
"href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
"type": "text/html"
}
]
}
],
"country": "SG",
"name": "NTUNET1",
"status": [
"active"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T06:53:40Z"
},
{
"eventAction": "last changed",
"eventDate": "2025-08-08T01:30:42Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/ip/155.69.0.21",
"rel": "self",
"href": "https://rdap.apnic.net/ip/155.69.0.0/16",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"imported inetnum object for NTU-3"
],
"title": "description"
},
{
"description": [
"----------",
"imported from ARIN object:",
"",
"inetnum: 155.69.0.0 - 155.69.255.255",
"netname: NTUNET1",
"org-id: NTU-3",
"status: assignment",
"rev-srv: DNSTEX.NTU.EDU.SG NTUIX.NTU.EDU.SG",
"tech-c: NN151-ARIN",
"reg-date: 1991-10-30",
"changed: [email protected] 20020226",
"source: ARIN",
"",
"----------"
],
"title": "remarks"
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],
"entities": [
{
"roles": [
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],
"events": [
{
"eventAction": "registration",
"eventDate": "2014-05-12T02:33:32Z"
},
{
"eventAction": "last changed",
"eventDate": "2026-09-29T13:16:15Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/ip/155.69.0.21",
"rel": "self",
"href": "https://rdap.apnic.net/entity/IRT-NTU-NON-SG",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"[email protected] was validated on 2026-09-29"
],
"title": "remarks"
}
],
"handle": "IRT-NTU-NON-SG",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"IRT-NTU-NON-SG"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "Nanyang Technological University, Centre for IT Services\n76 Nanyang Drive\nN2.1-B1\nSingapore 637331"
},
"text",
[
"",
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"",
"",
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""
]
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{
"pref": "1"
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"text",
"[email protected]"
]
]
]
},
{
"roles": [
"technical",
"administrative"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T07:29:34Z"
},
{
"eventAction": "last changed",
"eventDate": "2008-09-04T07:29:34Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/ip/155.69.0.21",
"rel": "self",
"href": "https://rdap.apnic.net/entity/NNM2-AP",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"----------",
"imported from ARIN object:",
"",
"poc-handle: NN151-ARIN",
"is-role: N",
"last-name: Network Managers",
"first-name: NTU",
"street: Nanyang Technological University, Centre for IT Services Nanyang Ave n/a, n/a 639798",
"country: SG",
"mailbox: [email protected]",
"fax-phone: 7910688",
"bus-phone: 7905228",
"reg-date: 2002-02-26",
"changed: [email protected] 20020226",
"source: ARIN",
"",
"----------"
],
"title": "remarks"
}
],
"handle": "NNM2-AP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"NTU Network Managers"
],
[
"kind",
{},
"text",
"individual"
],
[
"adr",
{
"label": "Nanyang Technological University, Centre for IT Services Nanyang Ave n/a, n/a 639798"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+65 7905228"
],
[
"tel",
{
"type": "fax"
},
"text",
"+65 7910688"
],
[
"email",
{},
"text",
"[email protected]"
]
]
]
},
{
"roles": [
"registrant"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2020-11-25T05:40:14Z"
},
{
"eventAction": "last changed",
"eventDate": "2023-09-05T02:14:47Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/ip/155.69.0.21",
"rel": "self",
"href": "https://rdap.apnic.net/entity/ORG-NTU2-AP",
"type": "application/rdap+json"
}
],
"handle": "ORG-NTU2-AP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Nanyang Technological University"
],
[
"kind",
{},
"text",
"org"
],
[
"adr",
{
"label": "Universitiy\nC/- Centre for IT Services\n50 Nanyang Avenue"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+65 6790 5231"
],
[
"tel",
{
"type": "fax"
},
"text",
"+65 6791 0688"
],
[
"email",
{},
"text",
"[email protected]"
]
]
]
}
],
"handle": "155.69.0.0 - 155.69.255.255",
"type": "ALLOCATED PORTABLE",
"startAddress": "155.69.0.0",
"endAddress": "155.69.255.255",
"objectClassName": "ip network",
"ipVersion": "v4",
"cidr0_cidrs": [
{
"v4prefix": "155.69.0.0",
"length": 16
}
],
"port43": "whois.apnic.net"
}
Security
No security threats detected for this IP.
VPN
Proxy
Tor
Hosting
Residential Proxy
Bogon
Abuser
Crawler
RPKI
RPKI Origin Validation
RPKI verifies that an IP prefix is legitimately announced by the authorized Autonomous System (ASN) using Route Origin Authorizations (ROAs).
Valid.
This prefix is correctly authorized by a valid ROA.
VALID
Validated Prefix
155.69.0.0/16
Authorized ASN
AS3491, AS9419
Abuse Contacts
IP Geolocation
Country
Singapore
Time Zone
Asia/Singapore
Coordinates
1.3667, 103.8
Continent
Asia
European Union
No.
Phone prefix
+65
Currency
Singapore Dollar (SGD $)