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73
Total
85
DNS
90
Email
69
Security
50
Network
60
Availability
Domainnrc.gov
IPv41
IPv60
MX records4
StatusActive
Domain technical report

Homepage | Nuclear Regulatory Commission

nrc.gov

Generated: 2026-08-09T13:13:48-05:00 · Cached result

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IPv41
IPv60
MX4
NS5

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

5 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 propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

4 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

74 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: nrc.gov

i
IPv4 diversity20 / 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

1 record(s)
148.184.180.35

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

4 record(s)
10 mail5.nrc.gov.
10 mail4.nrc.gov.
10 r4mail1.nrc.gov.
10 r4mail2.nrc.gov.

TXT

11 record(s)
"_j4w1bxhrpdagb2e3meaaf20mrzymomv"
"domain-verification=aftIcKeXgQOvVC-V-8W97iyy7La0cyY1d9bUoyLbepg"
"openai-domain-verification=dv-dXKnNcRdWiRhUEJuwutwuCBK"
"apple-domain-verification=UHb4ziZa9mhVGGpv"
"identrust_validate=46GtRVn6sZ25pMCvgN7Sf58oxv00fh4m065o49U19esP"
"cloudflare_dashboard_sso=bcaf9540a30612b1c22367755145941d"
"v=spf1 ip4:148.184.230.0/24 ip4:148.184.179.0/24 ip4:148.184.180.0/24 ip4:148.184.185.0/24 ip4:148.184.231.25 -all"
"docusign=1462ecf3-011c-4738-b1e0-57db57790a7b"
"box-domain-verification=188d55b7f9bc574046e7967ec392d5695e2782dfd9cd73214eef3219cdd47807"
"google-site-verification=ViHe5l7h-Y_ZVr7Glpo6LrgehWYSTY2gT2R85IWPj4I"
"MS=ms97771157"

NS

5 record(s)
ns0036.secondary.cloudflare.com.
a18-65.akam.net.
ns0132.secondary.cloudflare.com.
a3-67.akam.net.
a8-65.akam.net.

SOA

1 record(s)
a18-65.akam.net. postmaster.nrc.gov. 2025126647 10800 1080 2419200 900

CAA

0 record(s)
—

Not configured

DS

2 record(s)
4057 8 2 AEB5F4B57ECE69F28868CB7FEA86B16CA7B9D07CEE7E9FAD9CD68487 8616407F
43195 8 2 891717A845E4EB5F4E854B99CD0F232B2D258AF6BA583DC4A369F115 A6A2A759

DNSKEY

2 record(s)
257 3 8 AwEAAamZaNRoNC64vP9fhok/fx7YJUEfqMG280RvC0CtCB7c37zNHwIf 3t7gJnijrMv5FaoznZIfgCkxKhCGiCLAQuPf03pmBphnXRzM0t0CYx8n AQAbjbkOp9Lhy/2ErIM0ye1KcF82B5Jlq93NbAFDu8gGavVL0CzttMmM djRsxvlkiZ9yfuV1Afd1X2yXMd5SKJjwSTS6rHpD/x+a5Kraopi4AfKT Vfplf+763wi5G+rBtNkk5mGo1X1v3Thp3Dn8ffKHOTmF4JKP0zPBVKqu 6kyI5P3eQ/+gZpdy/WU001/voPIwDbgT6VzTQqUeeQTbeMzbW2+Rzbvz zVdzYxo8c48=
256 3 8 AwEAAe/J92Gf6xHTz47bjdIW5Vv8+9VOEgyBeibsCyohOryYFuHKHre6 54tp8Eh9jDQis11PxzdYorF82lYK9mCK3qAi11t2F11otTaaVZO+FO1k UHd5GKbo/RO4j0yx/vT7JH2+Is339a6e5VqL5O5mxRE2jHbPDeNmtqN8 HOY2jd7z

RRSIG

9 record(s)
DNSKEY 8 2 172800 20260813101124 20260809093408 43195 nrc.gov. Nvv2GHZgCPBs+556toJOWhnhyjp5Ko0NApMAykh92SggsxjUyEdmufZ7 2EZDpHSeEJ6msftMzbZb9E3ymKae6HZGal3FmUMMKOX+Tpj5auvNbhuc NUzXaqOo0hujJQJS5BJj2POkqS+F0I+2HTZk6jxRyrvZLp6eiNqCI5hG KDtByVnh6yUdX2rhNFxHC4ZKLWWieQ8l/zAFp0Gb72mUBKazjorvVgC9 0td5n2KHhwPKMffQPkq2d8s+yYaiu7jc1xf5+0xTcpyR+JVLlZhzRsTl 68GDeamW8agf8/DWUxGdfkZ18nH1wZkfMdHQPXwDfV5Mk9Bxt+GzqynJ y4xyjg==
DNSKEY 8 2 172800 20260813101124 20260809093408 45976 nrc.gov. ux3yQqd/mOUUCchff4XzK+l+nNODIUUsH11KSKn3Ws6CErp36nuA6Oxh C7JeoXh2E2LGAFIj+OTN4Vd74u/N0igTUNf8myQv9qrpEU3xY1tzHx+m KlR0nCr5wAYaa2QYwpiMt8v+Jf6yHoSDNMbli7Sh6eYfki128paFZ9et OT4=
TXT 8 2 28800 20260813023636 20260809023253 45976 nrc.gov. P7r0suLS+GLJSlLBR+Ca62QC87KL/XWu4Ku4e2w2HQBYZaAJejCRbbm/ tVIOAWop7HuCUx8C0u8RR5V4rYdEoppaC7toz6HJ50m6WYMcDCalNVoZ z81TIigFbjNS47UuY0U9VLTjA39rejNY9sElcCFj6meMb02hOLN40K01 jAo=
NS 8 2 28800 20260813105927 20260809101151 45976 nrc.gov. JSbFhgMLCjcIcLnTatemzaqxHS8f24xIRHCGVG0lgzShExP40BhirC4O OUqWWTidDwnRv6SH8z6xwP+SLh/k+RxEuyt07L5sxjy7mRJa898fcCes 6RhgIyC52tqkZEQoGXbcUWGmxdAIsYubVfKV++1LliOTBeRgo8IHYrTb UUM=
SOA 8 2 28800 20260813170909 20260809160909 45976 nrc.gov. I6Zu5N5HaU3LSjuOQSVBoV0q0LC18hxcjyaeY3fJZ5H0mJocnKTXQNef OoUO6liGThmuKBmnQMze9h/HPNfkqfz698fiX57EaAMKfwfzAlMGT8uE KfjWzydfskSt2JuvybYSU6UlCYBXGe6cJYm2UP8uA3nw9oZYhuKmOUlg sU0=
MX 8 2 600 20260813035627 20260809030324 45976 nrc.gov. wtpNs5i6Sjun/khc5FOzixoqKMbSHq0NeaJ8xaQP8pKfBi/3lQkKxnSS HzLxEvYs1BW4WsR9b8e6+TjuGNytNxyEJ7ei/4qNsBfNDtaWbZaUg+hE iEAp3Z9z4O4xjuo2o55wELPNc28AbsIszojFyDQXT0fv1QiJ26sjx2Iu 6hI=
A 8 2 28800 20260813050901 20260809045000 45976 nrc.gov. AGqQQITSwI029t6aJOwJjYlp0AStkhsBC9S5nLr3mAJKZbIWQy5HiCDz rxIlrUrzT/7OuhvbLQkqP4zjbT1PXwQr/xB/Qo0HgUZhqY+XD3A9ESco zSVj3EXHVWqpSSFq20q11+pYWra7UvDm/YmbzGmi5e/grVvTR5cvoc0h AQ0=
DS 13 2 3600 20260810191338 20260808171338 35496 gov. +b6Ewe7k8WybbPkqpWE1IwWlBNgQ4PLSHZaRObYbCihi+QT5pVB5G68s wtHP+HOnLojX9i/LR6ecJu2IqwsveQ==
NSEC3PARAM 8 2 900 20260812221252 20260808214858 45976 nrc.gov. P9VllrOEw1p/0frCbiHx1VuGjNHU2lrtxBZ1C7vgxBIWTf+fLmqiLoBn J2pRS0UOvprfuEFTrGQGuDBo+SmMu5FV86y9Br1mqKV876Ercu0v+3Ri jcrigTcvRzMQxDyr18jsZ977oMKjIoKh+s0O2vpYggP8d4NccPjwem0j 6SM=

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 ip4:148.184.230.0/24 ip4:148.184.179.0/24 ip4:148.184.180.0/24 ip4:148.184.185.0/24 ip4:148.184.231.25 -all

DMARC

Configured
v=DMARC1; p=reject; pct=100; rua=mailto:reports@dmarc.cyber.dhs.gov; ruf=mailto:postmaster@nrc.gov;

DKIM

Selector selector1
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDQvXoTOnjSLB2WXC4mpiX3rAuX4b6YdPKEsjkr26SI30I1U0Pa2QLyNzFubUPOGjfIiiAEyQL+hGS0hwxJM/m2tma7kEhseB9XH1bBhP0sip3vb7UNg2fjbaYv9vdOAQftlD5GIKHuLxazFjmvYyGeCBw7yXYmhyZMrIpH1RkCkwIDAQAB; n=1024,1481612587,1497337387

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Homepage | Nuclear Regulatory Commission
Description
Final URL
https://www.nrc.gov/
HTTP status
200

HTTP

Status
HTTP/2 403
Final URL
https://www.nrc.gov/
Version
3
Server
AkamaiGHost
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
DigiCert Inc
CN
nrc.gov
Valid from
2026-04-06T19:00:00-05:00
Valid until
2026-10-22T18:59:59-05:00
Days remaining
74
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

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
148.184.180.35
34,78 ms
Cloudflare
1.1.1.1
148.184.180.35
23,83 ms
Quad9
9.9.9.9
148.184.180.35
31,09 ms
OpenDNS
208.67.222.222
148.184.180.35
132,18 ms
AdGuard
94.140.14.14
148.184.180.35
67,78 ms

IP, geolocation and ASNAssociated network information

148.184.180.35

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

mail5.nrc.gov

Port 25: Closed/unreachable - 4.7 ms - 
Port 465: Closed/unreachable - 4020.6 ms - 
Port 587: Closed/unreachable - 4021.4 ms -

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