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66
Total
70
DNS
20
Email
69
Security
65
Network
100
Availability
Domainprojecteuclid.org
IPv42
IPv60
MX records2
StatusActive
Domain technical report

Search 2.5 million pages of mathematics and statistics articles

projecteuclid.org

Project Euclid

Generated: 2026-08-10T11:41:43-05:00 · Cached result

JSONCSVPDFVisit site
IPv42
IPv60
MX2
NS3

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 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

2 MX record(s).

!
SPF0 / 25 pts · Mail

SPF policy not found.

!
DMARC0 / 25 pts · Mail

DMARC policy not found.

!
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

66 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers4 / 35 pts · Security

1 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: 107.154.79.145.ip.incapdns.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 response40 / 40 pts · Availability

HTTP/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)
107.154.79.145
45.60.100.145

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

2 record(s)
20 in2-smtp.messagingengine.com.
10 in1-smtp.messagingengine.com.

TXT

0 record(s)
—

Not configured

NS

3 record(s)
dns-auth-01.oit.duke.edu.
dns-auth-02.oit.duke.edu.
dns-nc1-01.oit.duke.edu.

SOA

1 record(s)
dns-auth-01.oit.duke.edu. datacom-hostmaster.duke.edu. 685872986 1200 180 1209600 3600

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

Not configured
—

Not configured

DMARC

Not configured
—

Not configured

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Search 2.5 million pages of mathematics and statistics articles
Description
Project Euclid
Final URL
https://projecteuclid.org/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://projecteuclid.org/
Version
3
Server
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
GlobalSign nv-sa
CN
imperva.com
Valid from
2026-07-17T15:20:53-05:00
Valid until
2026-10-15T15:20:03-05:00
Days remaining
66
Protocol
TLSv1.3
Cipher
TLS_AES_128_GCM_SHA256

Security headers

1 active
✓
HSTSImplemented
—
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

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
107.154.79.145, 45.60.100.145
59,18 ms
Cloudflare
1.1.1.1
107.154.79.145, 45.60.100.145
74,53 ms
Quad9
9.9.9.9
107.154.79.145, 45.60.100.145
88,43 ms
OpenDNS
208.67.222.222
107.154.79.145, 45.60.100.145
103,83 ms
AdGuard
94.140.14.14
107.154.79.145, 45.60.100.145
298,72 ms

IP, geolocation and ASNAssociated network information

107.154.79.145

No data
success
No
country
region
city
asn
organization
isp

45.60.100.145

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

in2-smtp.messagingengine.com

Port 25: Closed/unreachable - 30.5 ms - 
Port 465: Closed/unreachable - 4005.4 ms - 
Port 587: Closed/unreachable - 4008 ms -

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