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81
Total
70
DNS
90
Email
92
Security
20
Network
100
Availability
Domainntu.edu.sg
IPv41
IPv60
MX records1
StatusActive
Domain technical report

Nanyang Technological University - NTU Singapore

ntu.edu.sg

Nanyang Technological University is one of the top universities in Singapore offering undergraduate and postgraduate education in engineering, business, science, humanities, arts, social sciences, education and medicine.

Generated: 2026-08-09T04:51:52-05:00 · Cached result

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IPv41
IPv60
MX1
NS4

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

4 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

!
DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

1 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

✓
DKIM20 / 20 pts · Mail

A DKIM selector was verified.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

81 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers27 / 35 pts · Security

7 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

i
IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

!
IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓
HTTP response40 / 40 pts · Availability

HTTP/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
104.16.4.14

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 ntu.in.tmes.trendmicro.com.

TXT

27 record(s)
"facebook-domain-verification=fcjy54pw7119yl41hmrmxhha6kibjj"
"IGHDQK0R7ISP3IUX7MUU3LKLMT7793SIRZEKQQR3Z"
"openatts a=dns-did; p=did:ethr:0x3d12104c4d77570636ae36d1cffc1cf563c781bb#controller; v=1.0;"
"adobe-idp-site-verification=6eb5dd45be203d77958b56b17ef30f078f4ce799ed76dce89a36ab3096360bec"
"6lwRPCZn=940d623d41ca8c8865e8c732bee52469"
"Dynatrace-site-verification=7d0a2f11-c2de-46a9-a3cd-378cc5d1d07b__ila8hmgf1263v5hbrtvpa6d0mr"
"_uc6m5qwgifde0wnuyjhfevmd0n0nwye"
"atlassian-domain-verification=j0NuBrC3Fso4yjfiDyksZje3OOPtNEGkcVsauZvXoX7EMUMcXwTCkcwB/smoDnHv"
"infoblox-domain-mastery=afb4e9a4797f404cf8b2c089b9f68bcd1f2fc88b8ee8fba44d25902bd483c953ca"
"denodo-agora-domain-verification=ec56a43b-e7e0-4047-8fb1-30b05352d0ff"
"openatts net=ethereum netId=1 addr=0x61783202d023fd08dcc7d7ca8a196697c46c9d57"
"GVWSDN5OSCXAIOF04KMT5W8UPY4ZYRU6LR4G2INPT"
"73B4FF3E2452F2D64C05726BDCE93D28BDF9710D"
"apple-domain-verification=yfBH4Jn5hpLwAAMm"
"MS=ms69007024"
"d365mktkey=6xMa0vU71ZR2ixK5mG5UV5Ug1iKHb19h63fMefwmpiUx"
"google-site-verification=paxVwUN60tJt34UY7d1tfPoxH4eRzr3n0ykB5rieXj8"
"v=spf1" " ip4:155.69.5.218" " ip4:155.69.24.187" " ip4:155.69.25.226" " ip4:155.69.25.244" " ip4:155.69.5.242" " ip4:155.69.5.113" " ip4:149.56.182.220" " ip4:94.23.120.168" " ip4:23.251.233.28" " include:spfext.ntu.edu.sg" " include:spf.protection.outlook.com" " include:marketing.dynamics.com" " include:outboundmail.blackbaud.net" " include:7571598.spf05.hubspotemail.net" " include:sendgrid.net" " include:ap.rp.oracleemaildelivery.com" " include:amazonses.com" " -all"
"amazonses:mBVPk6naV4iVXTFpT1XmYFQCGDWBfhDSi+4j8yZrsyc="
"vosaic-verification=VcBdIf5PDsf3coZ"
"google-site-verification=B5pDvca0m9WKVnsXLHHY09vguc7jJC6NsT9T2CdTEGo"
"facebook-domain-verification=dna9ern89lrik11avfttdh0q0mq6bp"
"tmes=99be067df2982a59c87e33712dea44de"
"openatts a=dns-did; p=did:ethr:0xb444a0ac5753a2684099c934bf4119b0bd8e35d3#controller; v=1.0;"
"openatts net=ethereum netId=1 addr=0x6bf2602b25752c4e3785951e7b95196c1d3ab29d"
"openatts net=ethereum netId=137 addr=0xb0bA40C99814ABF85b668bc37aBfBC5a26b343a8"
"google-site-verification=q6eRV63xn_rWdNKmXu9pQT6D4zksWDbHffZOV13GA8Y"

NS

4 record(s)
sdc-dns-ext-02.ntu.edu.sg.
secdns2.cyberway.com.sg.
ndc-dns-ext-01.ntu.edu.sg.
secdns.cyberway.com.sg.

SOA

1 record(s)
ndc-hiddenmaster.ntu.edu.sg. nss_servicedesk.ntu.edu.sg. 430594535 1200 180 1209600 3600

CAA

0 record(s)
—

Not configured

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

RRSIG

0 record(s)
—

Not configured

NSEC

0 record(s)
—

Not configured

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 ip4:155.69.5.218 ip4:155.69.24.187 ip4:155.69.25.226 ip4:155.69.25.244 ip4:155.69.5.242 ip4:155.69.5.113 ip4:149.56.182.220 ip4:94.23.120.168 ip4:23.251.233.28 include:spfext.ntu.edu.sg include:spf.protection.outlook.com include:marketing.dynamics.com include:outboundmail.blackbaud.net include:7571598.spf05.hubspotemail.net include:sendgrid.net include:ap.rp.oracleemaildelivery.com include:amazonses.com -all

DMARC

Configured
v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:postmaster@ntu.edu.sg; ruf=mailto:postmaster@ntu.edu.sg; ri=86400

DKIM

Selector selector2
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr0b+16Ifhi/g+nQNKPzlRco1uF0N2/NTEsfOE7Lt0TYa2pojwT3+4CfEiiF6DnXBb0zPzNjIUJVncBUsP/hz2iw7HhsDEkbepoLXeyClyHHGTdc2lJBLe7C7rsMrbAG/3xYLpP7o4rRtoJuTT8vQlLIqbnJDhLXwp6GtJ9MeXOv9QpuAQvWheBUxKIEd48ANFpgc9YQTa+g4J719F/gLcJcUFnnODh/b4HFjUf2xoSnOJ66sR6QeeR+/Yvv/sxv9lRTlTNA8Ywwrars/khqfGT1kOoanpVLDQWAitYTJqzKOnq1H6lR63RPQVrrKhdzfm32R8/wt1h+p/PamJoqpHQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Nanyang Technological University - NTU Singapore
Description
Nanyang Technological University is one of the top universities in Singapore offering undergraduate and postgraduate education in engineering, business, science, humanities, arts, social sciences, education and medicine.
Final URL
https://www.ntu.edu.sg/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://www.ntu.edu.sg/
Version
3
Server
cloudflare
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Google Trust Services
CN
ntu.edu.sg
Valid from
2026-07-31T18:24:13-05:00
Valid until
2026-10-29T19:24:07-05:00
Days remaining
81
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

7 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
—
Permissions PolicyNot detected
✓
Cross-Origin-Opener-PolicyImplemented
—
Cross-Origin-Embedder-PolicyNot detected
✓
Cross-Origin-Resource-PolicyImplemented

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
104.16.4.14
250,58 ms
Cloudflare
1.1.1.1
104.16.4.14
234,24 ms
Quad9
9.9.9.9
104.16.4.14
231,44 ms
OpenDNS
208.67.222.222
104.16.4.14
2.080,76 ms
AdGuard
94.140.14.14
104.16.4.14
546,42 ms

IP, geolocation and ASNAssociated network information

104.16.4.14

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

ntu.in.tmes.trendmicro.com

Port 25: Closed/unreachable - 8.7 ms - 
Port 465: Closed/unreachable - 4028.5 ms - 
Port 587: Closed/unreachable - 4029.7 ms -

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