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https://uh.edu

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
81
GRADE
B
FIX
1
REVIEW
5
PASS
3
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
3 PASS 5 REVIEW 1 FIX
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 detected

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

B
Redirect Chain
1 redirect(s), 1169 ms total
REVIEW
1 redirect(s), 1169 ms total
Info::
Single redirect
Got: https://uh.edu → https://www.uh.edu/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1169 ms total
Got: 1169 ms

https://uh.edu

501 ms · HTTP/1.1

301

https://www.uh.edu/

668 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://uh.edu301501 msHTTP/1.1Apache
2https://www.uh.edu/200668 msHTTP/1.1Apache

See the visual redirect chain in the HTTP Probe tab →

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

C
URL Variants
Action
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
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
Warning::
HTTP→HTTPS redirect uses 302 instead of 301
Got: 302 temporary redirect Expected: 301 permanent redirect

www / non-www

200https://www.uh.edu/
200https://uh.edu/

Inconsistent — duplicate content risk

HTTP → HTTPS

302http://uh.edu/ → https://uh.edu/

Use 301 (permanent) instead of 302 (temporary)

B
HTTP Probe Timing
Total 1299 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
REVIEW
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
143 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
124 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
908 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
1.30 s
Total Time Total request time from DNS lookup through full response.
1.30 s

Connection waterfall

DNS Lookup 143 ms TCP Connect 124 ms TLS Handshake 908 ms Server Processing 125 ms Content Transfer 0 ms
B
TLS Certificate Expiry & Recommendations
38 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

38
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
1 A records, 141 ms lookup
PASS
1 A records, 141 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 129.7.97.54
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
3 nameserver(s) configured
Got: ns6.dns.uh.edu, ns5.dns.uh.edu, ns.b1ddi.uh.edu
Info::
2 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
Info::
DNS resolution time: 141 ms
Got: 141 ms
A129.7.97.54
AAAA—
CNAME—
NSns6.dns.uh.edu, ns5.dns.uh.edu, ns.b1ddi.uh.edu
MX
10 mxb-000ce201.gslb.pphosted.com
10 mxa-000ce201.gslb.pphosted.com
TXT
MS=ms38595472
google-site-verification=XI7A8CHgxkCzWWXOyTIue-jgad0EP7w3XK8nsmfLEqc
google-site-verification=eoL4sNlZew1oD-ucFSs9-85SLetHYK9esVjAbOzfnSY
SPF v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
pardot999541=cf4826f5540bc59f55a5bd5fa36c46967ecb59e089a47852782c3363cd13fcfb
openai-domain-verification=dv-2io4W3vXTCOmiB9HOWc0WON9
apple-domain-verification=yrSv9UkhfdzoYjM7
airtable-verification=04bf2119563afc82790ef879b15ffa40
brevo-code:e991858f68e0e793955a016086dcccc6
google-site-verification=C1vpejLNf1Dy5UB0o-XrdS78RLF2mTBJicZ3r8MNZMo
CAALookup not available with standard resolver
Resolved in 141 ms

Multiple A records provide failover if one server goes down.

Why this matters

Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.

Learn more ▾

Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.

Source: SRE practice / DNS architecture

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.

A+
Crawlability
robots.txt present, sitemap with 37010 URLs
PASS
robots.txt present, sitemap with 37010 URLs
Info::
robots.txt is present
Got: 922 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 37010 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 922 B Sitemaps referenced 1 User-agents *, Bytespider, Baiduspider Blocking No — crawling allowed
Sitemap: https://www.uh.edu/sitemap.xml

User-agent: *
Disallow: /archives
Disallow: /search/
Disallow: /_training/
Disallow: /_qa/
Disallow: /_testdev/
Disallow: /_dev/
Disallow: /infotech/services/accessuh/
Disallow: /~bhakta/
Disallow: /academics/catalog/archive
Disallow: /grad-catalog-archive
Disallow: /honors/machform/machform/
Disallow: /hilton-college/forms/machform/ 
Disallow: /brand/_img/stretch1.png
Disallow: /brand/_img/stretch2.png
Disallow: /brand/_img/dropshadow1.png
Disallow: /brand/_img/dropshadow2.png
Disallow: /brand/_img/recolor1.png
Disallow: /brand/_img/export2.png
Disallow: /brand/_img/transparent1.png
Disallow: /brand/_img/reposition2.png
Disallow: /brand/_img/rotate1.png
Disallow: /brand/_img/transparencylogo.png
Disallow: */_archive/*
Disallow: /ethicsinscience/
Disallow: /honors/machforms/
Disallow: /_resources/

User-agent: Bytespider
Disallow: /

User-agent: Baiduspider
Disallow: /
sitemap.xml 200 OK
Type URL Set URLs 37010 entries Valid XML Yes
Sample URLs:
A+
Domain Intelligence
uh.edu — 39 years old, hosted on UNIVERSITY-OF-HOUSTON - University of Houston, US
PASS
uh.edu — 39 years old, hosted on UNIVERSITY-OF-HOUSTON - University of Houston, US
Info::
Domain registered until Jul 31, 2026 (3 months remaining)
Info::
Hosting: UNIVERSITY-OF-HOUSTON - University of Houston, US
Got: AS7276
Domain expiry

45 days

July 31, 2026

SSL certificate

38 days

Issued by DigiCert Inc

Domain age

39 years

Registered October 21, 1987

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

UNIVERSITY-OF-HOUSTON - University of Houston, US

ASN AS7276

129.7.97.54

Registrar

Registrar unknown

Lock status unknown 3 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Renew the domain or enable auto-renewal to prevent accidental expiry
Registrar
Created October 21, 1987 (39 years ago)
Expires July 31, 2026 (3 months)
Last Updated February 13, 2026
Name Servers ns1.uh.edu, ns3.uh.edu, ns2.uh.edu
Registrant University of Houston
Hosting
IP Address 129.7.97.54
ASN AS7276 (UNIVERSITY-OF-HOUSTON - University of Houston, US)
Provider UNIVERSITY-OF-HOUSTON - University of Houston, US
Data source: whois (0.9s)
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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