Domain technical report
Home Page : IIT Delhi
iitd.ac.in
Curriculum information and academic programs at the Indian Institute of Technology Delhi.
IPv41
IPv61
MX3
NS2
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87
Total
100
DNS
70
Email
88
Security
55
Network
100
Availability
Domainiitd.ac.in
IPv41
IPv61
MX records3
StatusActive
DiagnosticsMain findings and recommendations
IPv4 (A)30 / 30 pts · Dns
1 IPv4 address(es) detected.
IPv6 (AAAA)10 / 10 pts · Dns
1 IPv6 address(es) detected.
Name server redundancy20 / 20 pts · Dns
2 NS record(s); 2 or more required.
SOA record10 / 10 pts · Dns
Authoritative zone record.
DNSSEC chain15 / 15 pts · Dns
DS and DNSKEY detected.
CAA policy5 / 5 pts · Dns
Certificate authority restriction.
DNS propagation10 / 10 pts · Dns
Agreement between public resolvers.
MX records20 / 20 pts · Mail
3 MX record(s).
SPF25 / 25 pts · Mail
SPF policy published.
DMARC25 / 25 pts · Mail
DMARC policy published.
DKIM0 / 20 pts · Mail
No tested DKIM selector responded.
MTA-STS0 / 5 pts · Mail
Mail transport policy.
TLS-RPT0 / 5 pts · Mail
TLS reporting policy.
Valid TLS certificate55 / 55 pts · Security
39 day(s) remaining.
Certificate lifetime10 / 10 pts · Security
Full points require at least 30 days remaining.
HTTP security headers23 / 35 pts · Security
6 of 9 evaluated headers detected.
PTR reverse DNS0 / 30 pts · Network
PTR not detected.
IPv4 diversity20 / 35 pts · Network
Two or more IPv4 addresses receive full points.
IPv6 connectivity35 / 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)103.27.9.24
AAAA
1 record(s)2001:df4:e000:29::212
CNAME
0 record(s)—
Not configured
MX
3 record(s)20 smtp3.iitd.ac.in. 30 smtp2.iitd.ac.in. 10 smtp1.iitd.ac.in.
TXT
4 record(s)"v=spf1 mx -all" "_v9scuqy6jfhrilew5vbqb3tsaydvssl" "MS=89CD85869D48CA30A93E4A5A537E01904384946A" "google-site-verification=bbgNKs-56I_WU6QxNtfEAgPcVafrQiUZ1NNFv7PAyck"
NS
2 record(s)dns10.iitd.ac.in. dns8.iitd.ac.in.
SOA
1 record(s)dns8.iitd.ac.in. sysadm.cc.iitd.ac.in. 2026081101 2800 3600 1604800 86400
CAA
6 record(s)0 issue "digicert.com" 0 issue "globalsign.com" 0 issue "letsencrypt.org" 0 issuewild "globalsign.com" 0 issue "entrust.net" 0 iodef "mailto:ciso@iitd.ac.in"
DS
1 record(s)50704 13 2 D7EDFCEFEFAEDED27DF960FA7DFCF5B73CDC1D318A1F0C21EA29712D FB5DC757
DNSKEY
1 record(s)257 3 13 8YZRWarWJiosz+LOCnDihvKP9O3C+VE4jE9GVLnIB5FaS7uaSPSDHBjk g+nZgAq4bLvue+lIpDEfpItrZf7FIQ==
RRSIG
7 record(s)DNSKEY 13 3 3600 20260823091236 20260809082438 50704 iitd.ac.in. mMzoMbD8mesw7SqevW5yJHCsqUnkjVScfkZQ514mEKy/Nl+tyHO2dp/+ 0Iqfwus4eMQHS2nbB9OpxsYDXbOxhw== MX 13 3 8600 20260822025759 20260808022518 50704 iitd.ac.in. NzOPRV+TwMc4i1miL7xh+TWVr0Aq0p1G7iLdbfAirPYaQMkdSgtradqf UwbqUOPriAvE7Qmi8mUQJWKV+lTQIA== DS 13 3 900 20260819000457 20260721083552 46764 ac.in. aZo0f3hcHmSWkncyKrvP182gOUpShgeXRShhdM5ux9AGX4W5QUI3ZbdM hs4fAMpT2BRZ/uosFD1c2YZDd2pYFw== AAAA 13 3 8600 20260822025759 20260808022518 50704 iitd.ac.in. 36aJV/Ml4PlGM0+jISCR59e8lq1grgSJc0snW2UaVw0ysnV4qs6Q1Ndz HLElxiR/gFFMEKBubx49p2YhlY1zNg== A 13 3 8600 20260822025759 20260808022518 50704 iitd.ac.in. NzKKk71v9yccWJRjF6dexYopr0zCCxc9GPUkTvX2gbSJHbQGnChoaaDz lPqW0iepK6rqq/29LEuOPJho5Ypkmg== NSEC 13 3 8600 20260823035402 20260809033249 50704 iitd.ac.in. rM4ELhpbpsffO3dGpZsA4pmcujFqShDoQ1P5hjpiDQDTGcPq/OnfoSCc 5IxGIWAngmfZYBcDjkSjFXpPUOzqMw== SOA 13 3 8600 20260825065524 20260811055524 50704 iitd.ac.in. /IWEVPZ+DOTVB/l4GICivSO9nXyAEeLNcRfQIPTtWNIhVF8YddixsdGg V4tZN81J2biFtvh3sEGPMQcm0pBjdw==
NSEC
1 record(s)_dmarc.iitd.ac.in. A NS SOA MX TXT AAAA RRSIG NSEC DNSKEY CDS CDNSKEY CAA
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
Configuredv=spf1 mx -all
DMARC
Configuredv=DMARC1;p=quarantine;rua=mailto:dmarc@cc.iitd.ac.in;
DKIM
Not found—
Not configured
Analyzed webpageMetadata and HTTP response
Title and description
ExtractedTitle
Home Page : IIT Delhi
Description
Curriculum information and academic programs at the Indian Institute of Technology Delhi.
Final URL
https://home.iitd.ac.in/
HTTP status
206
HTTP
Status
HTTP/2 200
Final URL
https://home.iitd.ac.in/
Version
3
Server
Apache
X-Powered-By
SSL and HTTP securityCertificate, protocol and security headers
SSL certificate
AvailableAvailable
Yes
Issuer
GlobalSign nv-sa
CN
*.iitd.ac.in
Valid from
2025-08-19T03:56:02-05:00
Valid until
2026-09-20T03:56:01-05:00
Days remaining
39
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384
Security headers
6 activeHSTSImplemented
Content Security PolicyImplemented
X-Content-Type-OptionsImplemented
X-Frame-OptionsImplemented
Referrer PolicyImplemented
Permissions PolicyImplemented
Cross-Origin-Opener-PolicyNot detected
Cross-Origin-Embedder-PolicyNot detected
Cross-Origin-Resource-PolicyNot detected
DNS propagationComparison across public resolvers
Public resolver comparison
ConsistentConsistent propagation
5 public resolvers queried.
ResolverServerResultLatency
Google
8.8.8.8103.27.9.24
439,46 ms
Cloudflare
1.1.1.1103.27.9.24
642,01 ms
Quad9
9.9.9.9103.27.9.24
29,30 ms
OpenDNS
208.67.222.222103.27.9.24
958,99 ms
AdGuard
94.140.14.14103.27.9.24
976,09 ms
IP, geolocation and ASNAssociated network information
103.27.9.24
No datasuccess
No
country
region
city
asn
organization
isp
Visitor information
Visitorip
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
smtp3.iitd.ac.in
Port 25: Closed/unreachable - 252.8 ms - Port 465: Closed/unreachable - 532.3 ms - 220 smtp3.iitd.ac.in ESMTP Port 587: Closed/unreachable - 4282.2 ms -