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85
Total
80
DNS
95
Email
100
Security
85
Network
60
Availability
Domainucsc.edu
IPv41
IPv61
MX records5
StatusActive
Domain technical report

Just a moment...

ucsc.edu

Generated: 2026-08-08T22:07:44-05:00 · Cached result

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IPv41
IPv61
MX5
NS3

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

3 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

!
DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

5 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

✓
DKIM20 / 20 pts · Mail

A DKIM selector was verified.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

✓
TLS-RPT5 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

33 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

✓
HTTP security headers35 / 35 pts · Security

9 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: ip-37-16-20-230.customer.flyio.net

i
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 response0 / 40 pts · Availability

HTTP/2 403

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
37.16.20.230

AAAA

1 record(s)
2a09:8280:1::42:42ec:0

CNAME

0 record(s)
—

Not configured

MX

5 record(s)
5 alt1.aspmx.l.google.com.
1 aspmx.l.google.com.
10 alt4.aspmx.l.google.com.
5 alt2.aspmx.l.google.com.
10 alt3.aspmx.l.google.com.

TXT

23 record(s)
"v=spf1 include:_spf.mlsend.com include:_spf.google.com  ip4:66.85.64.0/23 ip4:66.179.192.96/27 ip4:67.217.233.192/26 ip4:209.23.238.206 ip4:206.107.46.254 ip4:34.198.91.107 ip4:34.198.225.191 include:spf1.ucsc.edu ~all"
"google-site-verification=YKp9SeXigjb7PuNbHQlI53u7up6azjlipnWnMcQDl8A"
"apple-domain-verification=XO9icURQtTK4967R"
"jamf-site-verification=Jl1UW-gVKdRe1z4RQepaSQ"
"amazonses:OLdo8B8RSoAxJeaMNhByxa+OHC80Gzqzze41wXllhgE="
"821285FAFF0F4D001B127346AB2D705B"
"google-site-verification=hTFQkUsHT0UnNiY0UlB9FE640Fw61mIcQTzjhHwvMvw"
"2o4e1vfscfmdnoc50n5n46n340"
"google-site-verification=qjSZFDGXMoROf_06GrfaDCGOxKhGwIZWPy1JyvuFPQg"
"docusign=92d2ff42-85b4-49d3-a7d4-ff6206c6b7da"
"virtru-site-verify=PbFPJQrlhOQuDphjnRmvQBT7NLpufe9o8IIjwsUb"
"9O98HIXRENZDBS4B49HG3EGSGUMD1SB71E1OLS1WG"
"sending_domain1048611=42e1dff1f7750da727e684cc0fff85782d9236257a3e7e03409e658b8c8d2c15"
"google-site-verification=b3tRHeWaOAfxcEB0rCMXu_kfVSZB5O1sAJUXwQMlXY8"
"atlassian-domain-verification=LT04D8PQ6rZDOYwwtkO66srjecUfj6tf1GAHT3MwwC9wt9hRhzj2gMIa4LGQO1PW"
"atlassian-sending-domain-verification=3e2c66df-563a-4582-96d2-4644733430b9"
"google-site-verification=9ihceAEfByq2aXDNn377UMW-tKjSuBwvmeEElF0Nagc"
"brevo-code:22a68b537c51751441d18a254169d3ff"
"dtm-domain-verification=rC0pX3ESCPq-6oxgeeXR7bZxSbwXhtsGMOPkdyM2hCE"
"atlassian-domain-verification=o4jKqspwzy6t1dhudUEPmQkJQXHUCdA4N1FBCLN2EU345AFSuN8faLnW6Msa84ZB"
"MS=BBDA09048FF123AA4DE4F66003797504E47CD473"
"google-site-verification=MAYcPln8bHyLVcZSoij9rWOtqe6TA0zWvPLwr5x-lBg"
"google-site-verification=YqGdNoAzlHV5CA2ymYS-eRmxx0p2inj3w_ZHzxYKcR4"

NS

3 record(s)
ns.zocalo.net.
adns1.ucsc.edu.
adns2.ucsc.edu.

SOA

1 record(s)
adns1.ucsc.edu. hostmaster.ucsc.edu. 44414083 10800 900 2419200 900

CAA

0 record(s)
—

Not configured

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

RRSIG

0 record(s)
—

Not configured

NSEC

0 record(s)
—

Not configured

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

Configured
v=spf1 include:_spf.mlsend.com include:_spf.google.com  ip4:66.85.64.0/23 ip4:66.179.192.96/27 ip4:67.217.233.192/26 ip4:209.23.238.206 ip4:206.107.46.254 ip4:34.198.91.107 ip4:34.198.225.191 include:spf1.ucsc.edu ~all

DMARC

Configured
v=DMARC1; p=quarantine; sp=none; pct=0; rua=mailto:dmarc-reports-group@ucsc.edu; ruf=mailto:dmarc-forensic-reports-group@ucsc.edu; fo=1

DKIM

Selector mail
k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeMVIzrCa3T14JsNY0IRv5/2V1/v2itlviLQBwXsa7shBD6TrBkswsFUToPyMRWC9tbR/5ey0nRBH0ZVxp+lsmTxid2Y2z+FApQ6ra2VsXfbJP3HE6wAO0YTVEJt1TmeczhEd2Jiz/fcabIISgXEdSpTYJhb0ct0VJRxcg4c8c7wIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Just a moment...
Description
Final URL
https://www.ucsc.edu/
HTTP status
403

HTTP

Status
HTTP/2 403
Final URL
https://www.ucsc.edu/
Version
3
Server
cloudflare
X-Powered-By
Express

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
ucsc.edu
Valid from
2026-06-13T18:42:04-05:00
Valid until
2026-09-11T18:42:03-05:00
Days remaining
33
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

9 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
✓
Permissions PolicyImplemented
✓
Cross-Origin-Opener-PolicyImplemented
✓
Cross-Origin-Embedder-PolicyImplemented
✓
Cross-Origin-Resource-PolicyImplemented

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
37.16.20.230
24,71 ms
Cloudflare
1.1.1.1
37.16.20.230
113,57 ms
Quad9
9.9.9.9
37.16.20.230
99,14 ms
OpenDNS
208.67.222.222
37.16.20.230
254,39 ms
AdGuard
94.140.14.14
37.16.20.230
47,47 ms

IP, geolocation and ASNAssociated network information

37.16.20.230

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
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

alt1.aspmx.l.google.com

Port 25: Closed/unreachable - 0.9 ms - 
Port 465: Closed/unreachable - 4019 ms - 
Port 587: Closed/unreachable - 4020.7 ms -

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