Domain diagnostics leetcode.com

Diagnose potential issues with a given domain.

You can bookmark this tool as diag.domains .

Transfer leetcode.com to Simply.com

Global name servers

Google Public DNS

melinda.ns.cloudflare.com (2399544382, TTL: 1800)

Cloudflare DNS

melinda.ns.cloudflare.com (2399544382, TTL: 1800)

Quad9

melinda.ns.cloudflare.com (2399544382, TTL: 226)

ns1.simply.com

DNS request failed: The name server refuses to perform the specified operation for policy reasons.

ns2.simply.com

DNS request failed: The name server refuses to perform the specified operation for policy reasons.

ns3.simply.com

DNS request failed: The name server refuses to perform the specified operation for policy reasons.

External tests

DNS zone As seen by Google Public DNS

Web servers

leetcode.com
Host Goal Reverse
leetcode.com 172.66.154.160 -
leetcode.com 104.20.41.79 -
leetcode.com AAAA IPv6 2606:4700:10:0:0:0:6814:294f -
leetcode.com AAAA IPv6 2606:4700:10:0:0:0:ac42:9aa0 -
www.leetcode.com
Host Goal Reverse
www.leetcode.com 104.20.41.79 -
www.leetcode.com 172.66.154.160 -
www.leetcode.com AAAA IPv6 2606:4700:10:0:0:0:6814:294f -
www.leetcode.com AAAA IPv6 2606:4700:10:0:0:0:ac42:9aa0 -

Incoming mail

Host # Goal IP Reverse
leetcode.com 1 aspmx.l.google.com 142.251.9.26 rc-in-f26.1e100.net
leetcode.com 5 alt2.aspmx.l.google.com 172.253.158.27 so-in-f27.1e100.net
leetcode.com 5 alt1.aspmx.l.google.com 192.178.211.27 lcbomp-in-f27.1e100.net
leetcode.com 10 alt4.aspmx.l.google.com 172.217.221.26 yunrtaa-in-f26.1e100.net
leetcode.com 10 alt3.aspmx.l.google.com 108.177.125.26 tp-in-f26.1e100.net

Outgoing mail

SPF record

Value
v=spf1 include:amazonses.com include:_spf.google.com include:mail.zendesk.com include:sendgrid.net -all
No Simply.com SPF record found

DKIM records

Simply.com DKIM records not found

DMARC record

Name Value
_dmarc.leetcode.com v=DMARC1;p=quarantine;pct=100;ruf=mailto:spam@leetcode.com

TXT records

Name Value
leetcode.com google-site-verification=uPA2Afaqn3DS4X4oaTesCU4ucbWXEdQXhdtyre0mdmg
leetcode.com SPF v=spf1 include:amazonses.com include:_spf.google.com include:mail.zendesk.com include:sendgrid.net -all
leetcode.com google-site-verification=ds0HPGUEYOzxPbBHmhQUrjDGv2-jKNpAOYcYK0dhSlw
leetcode.com domain-verification=6265d606aef4f770bf52dccbf18644e645dcada2b1ec0ce5a6061fb49cd55b5c

CAA records

Name Tag Value Flags
leetcode.com issuewild comodoca.com 0
leetcode.com issue ssl.com 0
leetcode.com issue letsencrypt.org 0
leetcode.com issue pki.goog; cansignhttpexchanges=yes 0
leetcode.com issuewild ssl.com 0
leetcode.com issuewild pki.goog; cansignhttpexchanges=yes 0
leetcode.com issuewild digicert.com; cansignhttpexchanges=yes 0
leetcode.com issue digicert.com; cansignhttpexchanges=yes 0
leetcode.com issuewild letsencrypt.org 0
leetcode.com issue comodoca.com 0

Nameservers

Host Nameserver
leetcode.com rob.ns.cloudflare.com
leetcode.com melinda.ns.cloudflare.com

WHOIS

Domain Name: LEETCODE.COM
Registry Domain ID: 1605940857_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: https://www.godaddy.com
Updated Date: 2025-03-24T21:32:14Z
Creation Date: 2010-07-10T20:27:34Z
Registrar Registration Expiration Date: 2034-07-10T20:27:34Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse -@- godaddy.com
Registrar Abuse Contact Phone: +1.4806242505
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Registry Registrant ID: Not Available From Registry
Registrant Name: Registration Private
Registrant Organization: Domains By Proxy, LLC
Registrant Street: DomainsByProxy.com
Registrant Street: 100 S. Mill Ave, Suite 1600
Registrant City: Tempe
Registrant State/Province: Arizona
Registrant Postal Code: 85281
Registrant Country: US
Registrant Phone: +1.4806242599
Registrant Phone Ext:
Registrant Fax: 
Registrant Fax Ext:
Registrant Email: https://www.godaddy.com/whois/results.aspx?domain=LEETCODE.COM&action=contactDomainOwner
Registry Tech ID: Not Available From Registry
Tech Name: Registration Private
Tech Organization: Domains By Proxy, LLC
Tech Street: DomainsByProxy.com
Tech Street: 100 S. Mill Ave, Suite 1600
Tech City: Tempe
Tech State/Province: Arizona
Tech Postal Code: 85281
Tech Country: US
Tech Phone: +1.4806242599
Tech Phone Ext:
Tech Fax: 
Tech Fax Ext:
Tech Email: https://www.godaddy.com/whois/results.aspx?domain=LEETCODE.COM&action=contactDomainOwner
Name Server: MELINDA.NS.CLOUDFLARE.COM
Name Server: ROB.NS.CLOUDFLARE.COM
DNSSEC: signedDelegation
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2026-03-22T08:32:19Z <<<
For more information on Whois status codes, please visit https://icann.org/epp

TERMS OF USE: The data contained in this registrar's Whois database, while believed by the
registrar to be reliable, is provided "as is" with no guarantee or warranties regarding its
accuracy. This information is provided for the sole purpose of assisting you in obtaining
information about domain name registration records. Any use of this data for any other purpose
is expressly forbidden without the prior written permission of this registrar. By submitting
an inquiry, you agree to these terms and limitations of warranty. In particular, you agree not
to use this data to allow, enable, or otherwise support the dissemination or collection of this
data, in part or in its entirety, for any purpose, such as transmission by e-mail, telephone,
postal mail, facsimile or other means of mass unsolicited, commercial advertising or solicitations
of any kind, including spam. You further agree not to use this data to enable high volume, automated
or robotic electronic processes designed to collect or compile this data for any purpose, including
mining this data for your own personal or commercial purposes. Failure to comply with these terms
may result in termination of access to the Whois database. These terms may be subject to modification
at any time without notice.

**NOTICE** This WHOIS server is being retired. Please use our RDAP service instead.

WHOIS result is cached for 15 minutes

RDAP

Domain
LEETCODE.COM
Handle
1605940857_DOMAIN_COM-VRSN
Status
client delete prohibitedclient renew prohibitedclient transfer prohibitedclient update prohibited
Registration
July 11, 2010 1:27 AM
Expiration
July 11, 2034 1:27 AM
Last changed
March 25, 2025 2:32 AM
Last update of rdap database
March 22, 2026 8:31 AM
Nameservers
MELINDA.NS.CLOUDFLARE.COM ROB.NS.CLOUDFLARE.COM
DNSSEC
Signed
Registrar
GoDaddy.com, LLC 
{
    "objectClassName": "domain",
    "handle": "1605940857_DOMAIN_COM-VRSN",
    "ldhName": "LEETCODE.COM",
    "links": [
        {
            "value": "https://rdap.verisign.com/com/v1/domain/LEETCODE.COM",
            "rel": "self",
            "href": "https://rdap.verisign.com/com/v1/domain/LEETCODE.COM",
            "type": "application/rdap+json"
        },
        {
            "value": "https://rdap.godaddy.com/v1/domain/LEETCODE.COM",
            "rel": "related",
            "href": "https://rdap.godaddy.com/v1/domain/LEETCODE.COM",
            "type": "application/rdap+json"
        }
    ],
    "status": [
        "client delete prohibited",
        "client renew prohibited",
        "client transfer prohibited",
        "client update prohibited"
    ],
    "entities": [
        {
            "objectClassName": "entity",
            "handle": "146",
            "roles": [
                "registrar"
            ],
            "links": [
                {
                    "href": "http://www.godaddy.com",
                    "type": "text/html",
                    "value": "https://rdap.godaddy.com/v1/",
                    "rel": "about"
                }
            ],
            "publicIds": [
                {
                    "type": "IANA Registrar ID",
                    "identifier": "146"
                }
            ],
            "vcardArray": [
                "vcard",
                [
                    [
                        "version",
                        [],
                        "text",
                        "4.0"
                    ],
                    [
                        "fn",
                        [],
                        "text",
                        "GoDaddy.com, LLC"
                    ]
                ]
            ],
            "entities": [
                {
                    "objectClassName": "entity",
                    "roles": [
                        "abuse"
                    ],
                    "vcardArray": [
                        "vcard",
                        [
                            [
                                "version",
                                [],
                                "text",
                                "4.0"
                            ],
                            [
                                "fn",
                                [],
                                "text",
                                ""
                            ],
                            [
                                "tel",
                                {
                                    "type": "voice"
                                },
                                "uri",
                                "tel:480-624-2505"
                            ],
                            [
                                "email",
                                [],
                                "text",
                                "abuse@godaddy.com"
                            ]
                        ]
                    ]
                }
            ]
        }
    ],
    "events": [
        {
            "eventAction": "registration",
            "eventDate": "2010-07-11T01:27:34Z"
        },
        {
            "eventAction": "expiration",
            "eventDate": "2034-07-11T01:27:34Z"
        },
        {
            "eventAction": "last changed",
            "eventDate": "2025-03-25T02:32:15Z"
        },
        {
            "eventAction": "last update of RDAP database",
            "eventDate": "2026-03-22T08:31:59Z"
        }
    ],
    "secureDNS": {
        "delegationSigned": true,
        "dsData": [
            {
                "keyTag": 2371,
                "algorithm": 13,
                "digestType": 2,
                "digest": "16C35E9F49DF32ECC9D2DB0DC296C0EED3FADAF32D575A824092250BC2416545"
            }
        ]
    },
    "nameservers": [
        {
            "objectClassName": "nameserver",
            "ldhName": "MELINDA.NS.CLOUDFLARE.COM"
        },
        {
            "objectClassName": "nameserver",
            "ldhName": "ROB.NS.CLOUDFLARE.COM"
        }
    ],
    "rdapConformance": [
        "rdap_level_0",
        "icann_rdap_technical_implementation_guide_1",
        "icann_rdap_response_profile_1"
    ],
    "notices": [
        {
            "title": "Terms of Service",
            "description": [
                "Service subject to Terms of Use."
            ],
            "links": [
                {
                    "href": "https://www.verisign.com/domain-names/registration-data-access-protocol/terms-service/index.xhtml",
                    "type": "text/html",
                    "value": "https://rdap.verisign.com/com/v1/domain/leetcode.com",
                    "rel": "terms-of-service"
                }
            ]
        },
        {
            "title": "Status Codes",
            "description": [
                "For more information on domain status codes, please visit https://icann.org/epp"
            ],
            "links": [
                {
                    "href": "https://icann.org/epp",
                    "type": "text/html"
                }
            ]
        },
        {
            "title": "RDDS Inaccuracy Complaint Form",
            "description": [
                "URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf"
            ],
            "links": [
                {
                    "href": "https://icann.org/wicf",
                    "type": "text/html",
                    "value": "https://rdap.verisign.com/com/v1/domain/leetcode.com",
                    "rel": "help"
                }
            ]
        }
    ]
}

RDAP result is cached for 15 minutes

HTTP trace

1
http://leetcode.com
HTTP 403
104.20.41.79
Namelookup
8 ms
Connect
12 ms
Pre-transfer
12 ms
Start-transfer (TTFB)
21 ms
HTTP/2 403 Forbidden
date: Sun, 22 Mar 2026 08:32:19 GMT
content-type: text/html; charset=UTF-8
transfer-encoding: chunked
connection: close
accept-ch: Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
cf-mitigated: challenge
critical-ch: Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
cross-origin-embedder-policy: require-corp
cross-origin-opener-policy: same-origin
cross-origin-resource-policy: same-origin
origin-agent-cluster: ?1
permissions-policy: accelerometer=(),browsing-topics=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),interest-cohort=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=()
referrer-policy: same-origin
server-timing: chlray;desc="9e03d8588cd11255"
x-content-type-options: nosniff
x-frame-options: SAMEORIGIN
content-encoding: gzip
server: cloudflare
cf-ray: 9e03d8588cd11255-CPH
1
Requests
0
Redirects
21 ms
Total time
403
Final status