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89
Total
100
DNS
90
Email
81
Security
55
Network
100
Availability
Domainnber.org
IPv41
IPv62
MX records1
StatusActive
Domain technical report

National Bureau of Economic Research | NBER

nber.org

Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, and business professionals.

Generated: 2026-08-08T20:29:24-05:00 · Cached result

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IPv41
IPv62
MX1
NS6

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

2 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

6 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 policy5 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

1 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-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

78 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers16 / 35 pts · Security

4 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

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 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

1 record(s)
23.185.0.2

AAAA

2 record(s)
2620:12a:8000::2
2620:12a:8001::2

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 smtp.nber.org.

TXT

12 record(s)
"_x3dp290k85ybkau5xibcskhm1f9m6le"
"MS=ms98599286"
"google-site-verification=_tGboNGFSXvGY8Xt5gPSRaRXSHgCPngXqFyQ-g_tN8I"
"atlassian-domain-verification=dBrjW25GtZgWrVcM0nNUUqu35hjEOMjjxwHdYp0TMnZ1tVMf8PojyXFOJ6tbj9AX"
"_plnq128kisw5qn6lm3vtco1x55xllta"
"bw=K3XDRppE9jDowgO5KzHoXx8XjrJ5a4DKV33/HC7sK8Vk"
"v=spf1 ip4:198.71.6.0/23 ip4:131.239.125.82/32 ip4:159.183.200.84/32 ip4:23.185.0.2/32 ip4:10.200.0.0/24 ip4:10.200.12.0/24" " ip4:172.16.0.0/24 ip4:172.16.99.0/24 include:_spf.google.com include:_spf.atlassian.net include:spf.serverdata.net include:_spf.psm.knowbe4.com ~all"
"_dp7u7p4tl685hqjvl8x8endr7tz8owz"
"duo_sso_verification=0tQrq6xK2Jt072l8RZ5zMtDGyPU37u9kofZGrpJOBRZBTVX27oejvcJtwcn3xzEM"
"google-site-verification=mxoK3UIHRdAuGrKvk3hnRp1pBXgJ4LXyietKXcxvmq8"
"atlassian-sending-domain-verification=333de3e6-9fdc-4e1d-81ba-0c1edfe8ce6c"
"MS=1919A71D3A6E75D2204D87450426F33919B5B82C"

NS

6 record(s)
a14-65.akam.net.
a20-66.akam.net.
a13-67.akam.net.
a9-64.akam.net.
a12-64.akam.net.
a1-251.akam.net.

SOA

1 record(s)
ns1.nber.org. noc.nber.org. 2026080516 1800 900 1209600 2700

CAA

2 record(s)
0 issue "letsencrypt.org"
0 issue "digicert.com"

DS

1 record(s)
60854 13 2 84E89167EF07D21EF36F9AF24AA89BF6449AF46B8A6DA939F9AB3C60 8A01E171

DNSKEY

1 record(s)
257 3 13 WrmfEaJ9WWqUaEdc1F7q/QeGeUG6/OZWPdQCug42zUUZZAEOwqSAfz4/ RBYXZH5YiKcXDdly7kJIfXc/E7xqIw==

RRSIG

11 record(s)
A 13 2 3600 20260815105150 20260801103428 60854 nber.org. o0DC84ERNCnxHnxfMVKMA1NAvO9q2RmFYmENqnMtcdPPvP9Z3gNA63uB O/L+UDRDNQkKdwCsBc4g99SiqHBlMA==
TXT 13 2 3600 20260818112720 20260804110024 60854 nber.org. 0i4T+40AcGLRf/PUVxBHKgTdZaUR9htuvNKdnmwovq5xqxaoGJDSPScj OVTN55ZQZ+BWeubKFXhGPmSDRG4Gow==
SOA 13 2 3600 20260822093546 20260808083546 60854 nber.org. RH+F/FDvm+FNCnrwfrimPWcSfGoKOVq63rdUYxCP2rKL4fMlYAW8Xn99 qokBeD1oAyXt9P9D4tQc4GdLwnZIdQ==
MX 13 2 3600 20260815105150 20260801103428 60854 nber.org. 0TQp3OVUfBBr+9KzriWEzhozHdDmhPcigmfReyyytTd38xufaBUBrfKe UcDyf18Sbu2bRQeKw+rAdhFNISRrtQ==
NS 13 2 3600 20260815105150 20260801103428 60854 nber.org. Yuy8EvMt/xiIKewV0/0PdY00wieayO2BCRMCI12bfVZPSzR6Jxh27nZd djUQc7LykifadhlHpM2qUZvRT0X1GQ==
DNSKEY 13 2 3600 20260815195410 20260801193054 60854 nber.org. gZo+jHRRRoVDZoHenOSbX+M0iyMxvDV+fh30HwR+f7WCp4j5/9voQHZM +wQjHhFZTpUnZ/VDbs+BuNSSXgIqXg==
AAAA 13 2 3600 20260815105150 20260801103428 60854 nber.org. iqgGq6jwGVtZaNszs7SkFpdX40GVrn5bj29oRYt9ZGeZ+kAmv4zUa4L1 6AEppuXrKiLw+plsrR9aSK4pSCVrOw==
DS 8 2 3600 20260822152352 20260801142352 44925 org. TYMOhpI42k2serXxy51elTGodrFslLwzriwmnmTm+970jtFIpjgBSrA8 Sh05wcBfni4xYktYpodbMCshb9WMgPxx73AaM3TstmntnQFdI89aaHDI T9Sve64sLD9ntB4JWjfiGk4E2BDAL7s8qrcTLMtjQBYC3WBEx0lVYdNX IfE=
CDS 13 2 3600 20260815195410 20260801193054 60854 nber.org. BDjsCz+171Z7qwnw+p2QHPijv96LyI6B6vCHtz35wTs8PtcVTwIvuN6i OPg3SB2YXWOqiLQuvQnElc+zOc298w==
CAA 13 2 3600 20260815105150 20260801103428 60854 nber.org. CB3tkFFBiopvWpa5bg1kwJKzVmRAq+2YPdHdZZ3pbzJcv47tUKWOvXvD AAql4fLZ1tg4k47GMjLMZkPg3oGwqw==
CDNSKEY 13 2 3600 20260815195410 20260801193054 60854 nber.org. YJJX31gNOQVmFlgU+/Fu1zzo6k0/Pmv+0BAkHZnDPh/z4DPeiMxnqxNy RuaLCA77MKucvSgv+T/HzApoMFg8Yw==

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 ip4:198.71.6.0/23 ip4:131.239.125.82/32 ip4:159.183.200.84/32 ip4:23.185.0.2/32 ip4:10.200.0.0/24 ip4:10.200.12.0/24 ip4:172.16.0.0/24 ip4:172.16.99.0/24 include:_spf.google.com include:_spf.atlassian.net include:spf.serverdata.net include:_spf.psm.knowbe4.com ~all

DMARC

Configured
v=DMARC1; p=quarantine; rua=mailto:616e172520ac149@rep.dmarcanalyzer.com; ruf=mailto:616e172520ac149@for.dmarcanalyzer.com; fo=1;

DKIM

Selector google
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsa5qjrl6QjaR8gMMna+RMj2WAmm9xCywZ56tq0C88WyPvvPanh4B8FQAk5vpR/vz1gdNsEIlH6ShupDu+mBOA2TgkDxmb9+PgiPuSHCTQFYcFmX1+45DhceApN/D/WFb1nVb/sDlMS0YnIgrER5l6DYsvrGLi14UadKxRaUC0aqmZ6JVkhDtiG+TtwsiH+40JrXJSy+wCRLKmAKYkHJYxqmukc+G9pviS70VXMuVmMBqBf0sWW0aUCe5En+a/mNEk1VceX8oxSl+BbQYfxPxcVwvVIRSHlneEPC0s9j9pBAcIrdupwOCC6IgGjS+w4GAH3GAVzhoNLfD647Yf4uF2QIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
National Bureau of Economic Research | NBER
Description
Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, and business professionals.
Final URL
https://www.nber.org/
HTTP status
200

HTTP

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

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
nber.org
Valid from
2026-07-27T23:13:35-05:00
Valid until
2026-10-25T23:13:34-05:00
Days remaining
78
Protocol
TLSv1.3
Cipher
TLS_AES_128_GCM_SHA256

Security headers

4 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
—
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
23.185.0.2
35,00 ms
Cloudflare
1.1.1.1
23.185.0.2
28,00 ms
Quad9
9.9.9.9
23.185.0.2
258,20 ms
OpenDNS
208.67.222.222
23.185.0.2
176,31 ms
AdGuard
94.140.14.14
23.185.0.2
475,39 ms

IP, geolocation and ASNAssociated network information

23.185.0.2

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

smtp.nber.org

Port 25: Closed/unreachable - 9.4 ms - 
Port 465: Closed/unreachable - 39.2 ms - 
Port 587: Closed/unreachable - 30.6 ms - 220 mail5.nber.org ESMTP Sendmail 8.18.1/8.18.1; Sat, 8 Aug 2026 21:29:24 -0400 (EDT)

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