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https://unlp.edu.ar

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
97
GRADE
A+
FIX
0
REVIEW
3
PASS
5
INFO
1
Probed from Madrid, Spain
200 OK
Checks
9
5 PASS 3 REVIEW
B
HTTP Probe Timing
Total 1368 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
REVIEW
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
270 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
219 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
222 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
1.15 s
Total Time Total request time from DNS lookup through full response.
1.37 s

Connection waterfall

DNS Lookup 270 ms TCP Connect 219 ms TLS Handshake 222 ms Server Processing 438 ms Content Transfer 220 ms
B
TLS Certificate Expiry & Recommendations
33 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

33
days left
0d 30d 60d 90d+

Recommended actions

  • 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
B
CDN & Delivery
Varnish
REVIEW
Varnish
Info::
Site is served via Varnish CDN
Got: via: 1.1 varnish (Varnish/7.0)
CDN Detected: Varnish
Provider Varnish Evidence via: 1.1 varnish (Varnish/7.0)
A
DNS Records
1 A records, 264 ms lookup
PASS
1 A records, 264 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 163.10.0.135
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
Has 1 IPv6 (AAAA) record(s)
Got: 2800:340:0:64::135
Info::
3 nameserver(s) configured
Got: anubis.unlp.edu.ar, ns1.riu.edu.ar, unlp.unlp.edu.ar
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 (264 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 264 ms
A163.10.0.135
AAAA2800:340:0:64::135
CNAME—
NSanubis.unlp.edu.ar, ns1.riu.edu.ar, unlp.unlp.edu.ar
MX
10 mail.unlp.edu.ar
TXT
google-site-verification=ge3peNju8RWSH1sKeYSK7zKX0trN2DyYItilfHePAQ0
google-site-verification=VH6AQGCGyOfOV75ZVgDVV3NyOOVpKK-VIEP3yFyehl8
SPF v=spf1 a:mail.unlp.edu.ar a:listas.unlp.edu.ar a:mail-app.unlp.edu.ar a:server.c...
CAALookup not available with standard resolver
Resolved in 264 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.

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+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://unlp.edu.ar

https://unlp.edu.ar

889 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://unlp.edu.ar200889 msHTTP/1.1nginx/1.18.0
A+
IPv6 Readiness
IPv6 reachable (221 ms)
PASS
IPv6 reachable (221 ms)
Info::
IPv6 is configured and reachable at 2800:340:0:64::135
Got: 221 ms connect
IPv6 Ready
AAAA Records 2800:340:0:64::135 Connection Reachable (221 ms)
A+
Crawlability
robots.txt present, sitemap with 26 URLs
PASS
robots.txt present, sitemap with 26 URLs
Info::
robots.txt is present
Got: 155 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 26 entries
Info::
Sitemap index with 26 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 155 B Sitemaps referenced 2 User-agents * Blocking No — crawling allowed
User-agent: *

Disallow: /wp-admin/

Allow: /wp-admin/admin-ajax.php


Sitemap: https://unlp.edu.ar/sitemap.xml

Sitemap: https://unlp.edu.ar/sitemap.rss
sitemap.xml 200 OK
Type Sitemap Index URLs 26 entries Valid XML Yes
Child Sitemaps:
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: non-www)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

301https://www.unlp.edu.ar/
200https://unlp.edu.ar/

Preferred variant: non-www

HTTP → HTTPS

301http://unlp.edu.ar/ → https://unlp.edu.ar/

Consistent

Domain Intelligence
Domain intelligence data not available
INFO
Domain intelligence data not available

RDAP and WHOIS lookup both failed

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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