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68
Total
75
DNS
70
Email
65
Security
65
Network
60
Availability
Domainstsci.edu
IPv44
IPv60
MX records2
StatusActive
Domain technical report

ERROR: The request could not be satisfied

stsci.edu

Generated: 2026-08-09T12:59:20-05:00 · Cached result

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IPv44
IPv60
MX2
NS4

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

4 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

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

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

✓
DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

!
DNS propagation0 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

2 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

!
DKIM0 / 20 pts · Mail

No tested DKIM selector responded.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

170 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

!
HTTP security headers0 / 35 pts · Security

0 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: server-108-157-150-21.mci50.r.cloudfront.net

✓
IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

!
IPv6 connectivity0 / 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

4 record(s)
108.157.150.21
108.157.150.93
108.157.150.33
108.157.150.2

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

2 record(s)
10 mxb-0042ee01.gslb.pphosted.com.
10 mxa-0042ee01.gslb.pphosted.com.

TXT

16 record(s)
"docker-verification=8fa6a830-537b-46b1-9a55-53f4c31dab76"
"google-site-verification=pg94pDV1-yiIdt6gtQc2Y_c8-v9GzVWQHk2Hk2x7TJ0"
"logmein-verification-code=w6PQpSx5zjBYknD95yvz5R8XB"
"usltw0yq4t"
"MS=ms40387392"
"webexdomainverification.103PD=63ac8693-4d54-42cf-999e-24648e9fdebd"
"logmein-verification-code=637c7ed4-f35b-4f3c-a965-632dcae7dd09"
"7FEF3C68EDC7F24D4C0F9D54E2E2297B"
"pexip-ms-tenant-domain-verification=f07cddd7-9faa-4427-96b2-9a05ba050fcc"
"DF5AD30F4FE4A0C3A6665A24DDB3F3EC"
"ayyyVfHSQp2YbAj3OdK931oGKUM/YHMcbUQogTnGdS0Z1OYnShQ+WWau1kUnzxgVS9vGky1aEgKSZrOvJ0ocXg=="
"61D1667DA1F04724F31823CC4697482D"
"atlassian-domain-verification=QDY7ZHVMx3EN0eiSVMorivPaZjfc3ExPXQf4bSt5lHshQjC3AAYrNyaHwiYedSgn"
"v=spf1 include:mta-spf.stsci.edu include:spf-0042ee01.pphosted.com include:spf.protection.outlook.com include:app.aventri.com ip4:130.167.165.12 ~all"
"duo_sso_verification=YOHxKPd9FLQcf97cD34sRiOalGwxkSiaN8Xl3Ld67nv2arL8bIVPxLANAljd6HEL"
"chariot=chariot+stsci@praetorian.com"

NS

4 record(s)
ns-878.awsdns-45.net.
ns-1407.awsdns-47.org.
ns-1639.awsdns-12.co.uk.
ns-417.awsdns-52.com.

SOA

1 record(s)
ns-1407.awsdns-47.org. please_set_email.absolutely.nowhere. 791789 10800 1080 2592000 300

CAA

0 record(s)
—

Not configured

DS

1 record(s)
38834 13 2 7B5E65D43BE0206EC7690F7D026A79C761EEB96946670A99821B073C 3947268D

DNSKEY

3 record(s)
256 3 13 L2nX9JA/g4btZG0HLyKCRNRk1IC7Ynfba5ULI9rSn0CD8c7oDHsxLTvm W0ZE23uiZA1mWuMqbBNveZrKhbkpAA==
257 3 13 E4VEoUli7AOcQd9jhgd7tUG4NyNqEn7rPKTf3NNG0UpFGruCTDsSBvuK NtQReqQr80jlP9qnioxEuPcBf1ImHA==
256 3 13 zC4IJe6KcWe7TbBse5pvx2xWmi1nagPhn4u7vQu5jrpkb+JZf8Vfd2Fb LY7osTDzEN0E0OJz2uQenfPY+T3oOw==

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:mta-spf.stsci.edu include:spf-0042ee01.pphosted.com include:spf.protection.outlook.com include:app.aventri.com ip4:130.167.165.12 ~all

DMARC

Configured
v=DMARC1; p=none; sp=none; rua=mailto:3b20adf7@mxtoolbox.dmarc-report.com,mailto:dmarc-rua@stsci.edu; ruf=mailto:3b20adf7@forensics.dmarc-report.com,mailto:dmarc-ruf@stsci.edu; fo=1

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
ERROR: The request could not be satisfied
Description
Final URL
https://stsci.edu/
HTTP status
403

HTTP

Status
HTTP/2 403
Final URL
https://stsci.edu/
Version
3
Server
CloudFront
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Internet2
CN
stsci.edu
Valid from
2026-01-25T18:00:00-06:00
Valid until
2027-01-26T17:59:59-06:00
Days remaining
170
Protocol
TLSv1.3
Cipher
TLS_AES_128_GCM_SHA256

Security headers

0 active
—
HSTSNot detected
—
Content Security PolicyNot detected
—
X-Content-Type-OptionsNot detected
—
X-Frame-OptionsNot detected
—
Referrer PolicyNot detected
—
Permissions PolicyNot detected
—
Cross-Origin-Opener-PolicyNot detected
—
Cross-Origin-Embedder-PolicyNot detected
—
Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Review
!
Differences detected

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
108.156.91.121, 108.156.91.43, 108.156.91.59, 108.156.91.96
49,11 ms
Cloudflare
1.1.1.1
108.156.91.121, 108.156.91.43, 108.156.91.59, 108.156.91.96
52,68 ms
Quad9
9.9.9.9
108.157.150.2, 108.157.150.21, 108.157.150.33, 108.157.150.93
65,97 ms
OpenDNS
208.67.222.222
108.156.91.121, 108.156.91.43, 108.156.91.59, 108.156.91.96
74,12 ms
AdGuard
94.140.14.14
108.157.150.2, 108.157.150.21, 108.157.150.33, 108.157.150.93
59,69 ms

IP, geolocation and ASNAssociated network information

108.157.150.21

No data
success
No
country
region
city
asn
organization
isp

108.157.150.93

No data
success
No
country
region
city
asn
organization
isp

108.157.150.33

No data
success
No
country
region
city
asn
organization
isp

108.157.150.2

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

mxb-0042ee01.gslb.pphosted.com

Port 25: Closed/unreachable - 22.9 ms - 
Port 465: Closed/unreachable - 71 ms - 
Port 587: Closed/unreachable - 75.9 ms -

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