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https://usf.edu

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
75
GRADE
C
FIX
3
REVIEW
4
PASS
2
INFO
0
Probed from Sao Paulo, Brazil
302 Found
Checks
9
2 PASS 4 REVIEW 3 FIX
D
URL Variants
Action
www/non-www, trailing slash, HTTP→HTTPS
FIX
www/non-www, trailing slash, HTTP→HTTPS
Critical::
Both www and non-www versions serve content
Got: Both variants return 200 Expected: One variant 301-redirects to the other
Critical::
HTTP version does not redirect to HTTPS
Got: HTTP 302 Expected: 301 redirect to HTTPS

www / non-www

200https://www.usf.edu/
200https://usf.edu/

Inconsistent — duplicate content risk

HTTP → HTTPS

302http://usf.edu/ → http://www.usf.edu/

HTTP version does not redirect to HTTPS

F
HTTP Probe Timing
Action
Total 10714 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
FIX
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
240 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
116 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
242 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
10.71 s
Total Time Total request time from DNS lookup through full response.
10.71 s

Connection waterfall

DNS Lookup 240 ms TCP Connect 116 ms TLS Handshake 242 ms Server Processing 10.12 s Content Transfer 0 ms
D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN (document or assets)

Consider using a CDN to improve global delivery speed and reduce origin load.

B
Redirect Chain
1 redirect(s), 1313 ms total
REVIEW
1 redirect(s), 1313 ms total
Info::
Single redirect
Got: https://usf.edu → https://www.usf.edu/ (302)
Info::
WWW normalization redirect
Info::
Uses 302 (temporary) redirect
If permanent, use 301 instead.
Got: https://usf.edu
Warning::
Redirect overhead: 1313 ms total
Got: 1313 ms

https://usf.edu

590 ms · HTTP/1.1

302

https://www.usf.edu/

723 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://usf.edu302590 msHTTP/1.1Apache/2.2.15 (CentOS)
2https://www.usf.edu/200723 msHTTP/1.1Microsoft-IIS/10.0

See the visual redirect chain in the HTTP Probe tab →

If permanent, use 301 instead.

Why this matters

302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.

Learn more ▾

Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).

Source: Google Search Central

C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

B
Crawlability
robots.txt present, no sitemap
REVIEW
robots.txt present, no sitemap
Info::
robots.txt is present
Got: 996 bytes
Info::
No sitemap.xml found
A sitemap helps search engines discover and index your pages more efficiently.
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

A sitemap helps search engines discover and index your pages more efficiently.

Why this matters

No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.

Learn more ▾

A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.

Source: sitemaps.org / Google Search Central

Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Why this matters

robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.

Source: sitemaps.org

robots.txt 200 OK
Size 996 B Sitemaps referenced 0 User-agents Twitterbot, *, AhrefsBot, AhrefsSiteAudit Blocking No — crawling allowed
###############################
# robots.txt for USF.edu
###############################

User-agent: *
# list folders robots are not allowed to index
Disallow: /images
Disallow: /css
Disallow: /aspnet_client
Disallow: /javascripts
Disallow: /snapshots
Disallow: /web-templates
Disallow: /inc
Disallow: /utilities
Disallow: /calendar
Disallow: /it/archive
Disallow: /test/bob
Disallow: /student-affairs/tedx
Disallow: /*.pdf$
Disallow: /*.doc$
Disallow: /*.docx$
Disallow: /*.ppt$
Disallow: /*.pptx$
Disallow: /*.xls$
Disallow: /*.xlsx$
Disallow: /*.rtf$
Disallow: /*.txt$
#
# list specific files robots are not allowed to index
#
Disallow: /Atest.html
Disallow: /jstest.asp
Disallow: /About-USF/contact-send.asp
Disallow: /About-USF/page-not-found.asp
#

# Ahrefs for Admissions
User-agent: AhrefsBot
User-agent: AhrefsSiteAudit
Allow: /admissions

#
#
User-agent: Twitterbot
# allow twitter to fetch images for news
Allow: /images
#
#
# End of robots.txt file
#
###############################
sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

B
TLS Certificate Expiry & Recommendations
47 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

47
days left
0d 30d 60d 90d+

Recommended actions

  • Prefer TLS 1.3 — TLS 1.2 is acceptable but TLS 1.3 removes RSA key exchange and improves latency
  • Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
  • Enable DNSSEC on your domain for DNS spoofing protection
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A
DNS Records
3 A records, 807 ms lookup
PASS
3 A records, 807 ms lookup
Info::
Resolves to 3 IPv4 address(es)
Got: 52.141.216.229, 131.247.100.1, 131.247.1.40
Info::
No IPv6 (AAAA) records
Info::
3 nameserver(s) configured
Got: mother.usf.edu, ziggy.usf.edu, azure-dr-bns1.usf.edu
Info::
1 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Warning::
DNS resolution is slow (807 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 807 ms
A52.141.216.229, 131.247.100.1, 131.247.1.40
AAAA—
CNAME—
NSmother.usf.edu, ziggy.usf.edu, azure-dr-bns1.usf.edu
MX
1 usf-edu.mail.protection.outlook.com
TXT
MS=ms23753316
d365mktkey=7ip105aztsfd70m9n8eo3ejf9
d365mktkey=601tv5trrvreyj6bzyslcnzax
d365mktkey=5nosf1qedtbdafq82xqtn27dv
d365mktkey=2m5ABYUCfNSwaoNPV9jzF1F6t0pOB9TnEOsGgm4Avdcx
d365mktkey=MrTGq7txTfKTkLhL0nf0OiEC5SrRxxKqKF2aNjiuU8Ex
d365mktkey=xa8jurUDwFEz74ZnQ7WlGilxH0tPdLvxa8TSlD5xx0Ux
d365mktkey=iNji8EDhmRpPXrRiA5z7ezInCA0vZluGDLLd4YRB80Ux
d365mktkey=BGPRxE8WTqSVTE1F5vDJxwjVA1OxgouvxAj3aoOXVVQx
d365mktkey=F7uOB9wbJmFEQSALiHvgFuugwPhfs5IqAcUYt9TRIhgx
MS=42739637732355332AF820E28477F500065B9A72
status-page-domain-verification=gy36rnszmxbq
docusign=0dada4e5-1189-4e69-8de2-977a9553c398
docusign=aa2efdf7-c1aa-4262-800b-3d2b94bbb6cc
adobe-idp-site-verification=d879fe48fced7913c6d147a34ab70d2ff94d56f1d92c646fce75...
google-site-verification=SpqYEXgDGiR3zr2qA_jvNRKD4l9zfNzQwgsqRSjRmM0
google-site-verification=aWIbQ2KduYLv2g15bKXksgtjMchwc6KZzJNzJNK2_30
NYV0AYHBAGCHRKN8I4WWX4AH4H0OY2TTMAIB5RDDN
cisco-ci-domain-verification=65f65a56c7bb4653556a72d060506f8605f9998184dc004d40e...
SFMC-j-cNwBW8CQysevUymKy6se0n8iBbrhUq7W-CSmW7
apple-domain-verification=f4cisO9UYFrZ6KlT
twilio-domain-verification=441d54f282e7bef5f1c32d639bea0cd4
e2ma-verification=loubb
atlassian-sending-domain-verification=18e168c7-b1cc-4cdd-aa3b-8572e7c3544f
canva-site-verification=NRk7_nO8gJ7uOY-4wmV24A
google-site-verification=wrSVEyGKWhHeh1JWDAKxXvrPvoPPP6eXzSX8sKIA-dU
d365mktkey=UEbGLz5xI1Tx8nbciuYKn2e0B6iLhx5A5XryOtLCWOMx
d365mktkey=gzNvQ60b67c6fmofrMNGloYMOatQPeJ9xJOokxMFJe8x
d365mktkey=DxFf3WuF0IGB61YnH34L9kDh07tGIeNOkfRouXlIfIUx
asv=d224a0547fb92e2496202b68f195b1b6
atlassian-domain-verification=xB3/NkAuVnlN9v3May92Kx68o7N3FTau6mxXUaONHM3VHRHbc5...
SPF v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
yxU9UxBuQ/bkByoGU8S3012Fyu7esoAS102X+LFYacXm4opMH3Nr6c6A3o96SekSehT+xt5f22rmzu74...
IVTBbFkoe6isnHlO7BuuigyKnPTbb2Q8p7AtTL3wxLxXJA5yKjp0tW/PlWqnvpCcK2DXy65unYUxqmf9...
CAALookup not available with standard resolver
Resolved in 807 ms

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

Slow DNS adds latency to every page load. Consider a faster DNS provider.

Why this matters

DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.

Source: DNS performance benchmarks

A+
Domain Intelligence
usf.edu — 40 years, 1 months old, hosted on Microsoft Azure
PASS
usf.edu — 40 years, 1 months old, hosted on Microsoft Azure
Info::
Domain registered until Jul 31, 2027 (1 years, 3 months remaining)
Info::
Hosting: Microsoft Azure
Got: AS8075
Domain expiry

264 days

July 31, 2027

SSL certificate

47 days

Issued by Internet2

Domain age

40 years, 1 months

Registered September 29, 1986

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Microsoft Azure

ASN AS8075

52.141.216.229

Registrar

Registrar unknown

Lock status unknown 3 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Registrar
Created September 29, 1986 (40 years, 1 months ago)
Expires July 31, 2027 (1 years, 3 months)
Last Updated January 15, 2026
Name Servers mother.usf.edu, azure-dr-bns1.usf.edu, ziggy.usf.edu
Registrant University of South Florida
Hosting
IP Address 52.141.216.229
ASN AS8075 (MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US)
Provider Microsoft Azure
Data source: whois (1.1s)
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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