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https://syr.edu

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
87
GRADE
B
FIX
1
REVIEW
3
PASS
5
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
5 PASS 3 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), 1377 ms total
REVIEW
1 redirect(s), 1377 ms total
Info::
Single redirect
Got: https://syr.edu → https://www.syracuse.edu/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1377 ms total
Got: 1377 ms
Info::
Cross-domain redirect detected

https://syr.edu

284 ms · HTTP/1.1

301

https://www.syracuse.edu/

1093 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://syr.edu301284 msHTTP/1.1nginx
2https://www.syracuse.edu/2001093 msHTTP/1.1

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

B
TLS Certificate Expiry & Recommendations
48 days until leaf cert expires — 5 issues to address
REVIEW

Certificate validity

48
days left
0d 30d 60d 90d+

Recommended actions

  • Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
  • Add includeSubDomains to the HSTS directive
  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • 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, 116 ms lookup
PASS
1 A records, 116 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 128.230.18.63
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
7 nameserver(s) configured
Got: ns1.syr.edu, lurch.cns.syr.edu, its-ndd-sc-extns-01.syr.edu, icarus.syr.edu, ns2.syr.edu, lurch.syr.edu, its-ndd-nc-extns-01.syr.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
Info::
DNS resolution time: 116 ms
Got: 116 ms
A128.230.18.63
AAAA—
CNAME—
NSns1.syr.edu, lurch.cns.syr.edu, its-ndd-sc-extns-01.syr.edu, icarus.syr.edu, ns2.syr.edu, lurch.syr.edu, its-ndd-nc-extns-01.syr.edu
MX
10 syr-edu.mail.protection.outlook.com
TXT
d365mktkey=xtwwJrx4xyMxzKlKtGfXrtAD3RrKPssxi4xghrW9LCYx
38fu1ofo2v6cjntnk0jdaaovaf
jamf-site-verification=M5etiTqGdkTkdSsFNZn7Yw
airtable-verification=75fc4c60b061a07e5a1973a39c2c6032
atlassian-sending-domain-verification=e48074eb-dc35-4c0a-801d-15b7e7152ce8
SPF v=spf1 mx:spf.syr.edu include:spf.protection.outlook.com -all
anthropic-domain-verification-bbywt6=lAujtI5TVyzitNIxCeNUfyQOI
d365mktkey=k3qWbfxG7YqGLgbdErhW3jrkrJVAdkRCmRAMQ9e0zB4x
atlassian-domain-verification=YmuP0w5kKYcGbbj2l0Hznj1kt1oqUcXNbW2ArTDpxPjFUr/znB...
CAALookup not available with standard resolver
Resolved in 116 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 849 URLs
PASS
robots.txt present, sitemap with 849 URLs
Info::
robots.txt is present
Got: 159 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 849 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 159 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-agent: *
Disallow: /search/ 
Disallow: /tmp/
Disallow: /static/ 
Disallow: /admin/
Disallow: /stories-demo/

Sitemap: https://www.syracuse.edu/sitemap.xml
sitemap.xml 200 OK
Type URL Set URLs 849 entries Valid XML Yes
Sample URLs:
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.syr.edu/
200https://syr.edu/

Preferred variant: non-www

HTTP → HTTPS

301http://syr.edu/ → https://www.syr.edu/

Consistent

A+
Domain Intelligence
syr.edu — 40 years, 2 months old, hosted on SYRACUSE-UNIVERSITY - Syracuse University, US
PASS
syr.edu — 40 years, 2 months old, hosted on SYRACUSE-UNIVERSITY - Syracuse University, US
Info::
Domain registered until Jul 31, 2026 (3 months remaining)
Info::
Hosting: SYRACUSE-UNIVERSITY - Syracuse University, US
Got: AS11872
Domain expiry

45 days

July 31, 2026

SSL certificate

48 days

Issued by Let's Encrypt

Domain age

40 years, 2 months

Registered September 2, 1986

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

SYRACUSE-UNIVERSITY - Syracuse University, US

ASN AS11872

128.230.18.63

Registrar

Registrar unknown

Lock status unknown 2 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 September 2, 1986 (40 years, 2 months ago)
Expires July 31, 2026 (3 months)
Last Updated July 3, 2025
Name Servers ns2.syr.edu, ns1.syr.edu
Registrant Syracuse University
Hosting
IP Address 128.230.18.63
ASN AS11872 (SYRACUSE-UNIVERSITY - Syracuse University, US)
Provider SYRACUSE-UNIVERSITY - Syracuse University, US
Data source: whois (1.0s)
A+
HTTP Probe Timing
Total 397 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
114 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
94 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
96 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
397 ms
Total Time Total request time from DNS lookup through full response.
397 ms

Connection waterfall

DNS Lookup 114 ms TCP Connect 94 ms TLS Handshake 96 ms Server Processing 94 ms Content Transfer 0 ms
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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