Dataweaz

ihg.com

Summary

Registrar
MarkMonitor Inc.
Status
clientDeleteProhibited
Created on
May 4, 1998
Expires on
May 3, 2027
Name servers
a9-66.akam.net, a26-67.akam.net, a4-64.akam.net, a16-66.akam.net, a1-131.akam.net, a5-65.akam.net
Mail servers
mxb-0036c501.gslb.pphosted.com, mxa-0036c501.gslb.pphosted.com

Spoofing protection (DMARC)

Monitoring

E-mails spoofing this domain are only reported, not blocked.

DMARC tells mail servers what to do with an e-mail that claims to come from ihg.com but fails SPF and DKIM checks.

Policy
Monitoring
Subdomain policy
Monitoring
Messages covered
100%
DKIM alignment
Relaxed
SPF alignment
Relaxed
Failure reports
[email protected]

Record

v=DMARC1; p=none; fo=1; rua=mailto:[email protected], mailto:[email protected]; ruf=mailto:[email protected]

Authorized senders (SPF)

Strict

E-mails sent by any other server are rejected.

SPF lists the servers allowed to send e-mails for ihg.com.

RuleValueResult
include_spf.ihg.comAllowed
include_spf.google.comAllowed
includeamazonses.comAllowed
includespf.protection.outlook.comAllowed
include_spf.highradius.comAllowed
ip4148.163.135.129Allowed
ip4216.133.255.190Allowed
ip4147.154.153.87Allowed
ip4138.1.67.161Allowed
ip4138.1.65.17Allowed
all—Rejected

Top-level DNS lookups: 5 of 10 allowed

Record

v=spf1 include:_spf.ihg.com include:_spf.google.com include:amazonses.com include:spf.protection.outlook.com include:_spf.highradius.com ip4:148.163.135.129 ip4:216.133.255.190 ip4:147.154.153.87 ip4:138.1.67.161 ip4:138.1.65.17 -all

E-mail signing (DKIM)

DKIM keys published by ihg.com under the most common selectors. Other keys may exist under selectors specific to each sending service.

SelectorLikely serviceKeyStatus
googleGoogle WorkspaceRSAActive
k2MailchimpRSA 2048 bitsActive
k3MailchimpRSA 2048 bitsActive
s1SendGridRSA 2048 bitsActive
s2SendGridRSA 2048 bitsActive
mailjetMailjetRSA 1024 bits · shortActive
default—RSA 1024 bits · shortActive
dk—RSA 512 bits · shortActive

RSA keys shorter than 2048 bits, called short keys, are discouraged: they are easier to break.

MX, SPF, DKIM and DMARC: the e-mail records

Four DNS records make a domain's e-mail work. MX says where e-mails sent to ihg.com arrive; SPF, DKIM and DMARC let mail servers check that an e-mail claiming to come from ihg.com was really sent by this domain, which protects it against spoofing.

MX

An MX (Mail Exchanger) record designates a server that receives e-mails sent to the domain. When someone writes to an @ihg.com address, their mail server queries the DNS for the domain's MX records, then delivers the message to the server they point to.

Example record

ihg.com  MX  10 mx1.ihg.com.
ihg.com  MX  20 mx2.ihg.com.

What the record contains

10, 20
Priority: the server with the lowest number is tried first. Servers with equal priority share the load.
mx1.ihg.com.
Host name of the mail server. It must point to an A or AAAA record: an IP address or an alias (CNAME) is not allowed here.
0 .
An MX "0 .", called a null MX, declares that the domain accepts no e-mail: sending servers give up at once instead of retrying.

Declaring at least two servers with different priorities avoids losing e-mails during an outage: sending servers retry for several days and fall back on the backup server. Without any MX, they try to deliver directly to the IP address of the domain.

SPF

SPF (Sender Policy Framework) is a TXT record listing the servers allowed to send e-mails on behalf of the domain. The receiving server checks that the sender is on this list. The final "all" rule says what to do with other servers: reject them (-all), flag their e-mails as suspicious (~all) or make no decision (?all).

Example record

ihg.com  TXT  "v=spf1 mx include:_spf.google.com ip4:192.0.2.10 -all"

What the record contains

v=spf1
Identifies the record as an SPF policy. It must come first.
ip4, ip6
Allows a specific IP address or an address range, for example ip4:192.0.2.0/24.
a, mx
Allows the addresses of the domain itself (A record) or those of its mail servers (MX).
include
Allows the servers of another domain, usually a sending service: include:_spf.google.com for Google Workspace.
-all, ~all
Final rule, applied to every other server. Its qualifier decides what happens to them: - rejects them, ~ flags their e-mails as suspicious, ? makes no decision, + accepts them (avoid it).

A domain must publish only one SPF record, and its evaluation cannot exceed 10 DNS lookups (include, a, mx, exists, redirect). Beyond that, mail servers treat it as invalid.

DKIM

DKIM (DomainKeys Identified Mail) signs every outgoing e-mail with a private key. The matching public key is published in a TXT record at selector._domainkey.ihg.com, so the recipient can check that the message really comes from the domain and was not altered on the way. The selector is chosen by each sending service and cannot be guessed: Dataweaz checks the most common ones (Google Workspace, Microsoft 365, Mailchimp, SendGrid…), so a key published under another selector may exist without appearing here.

Example record

google._domainkey.ihg.com  TXT  "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA…"

What the record contains

v=DKIM1
Protocol version. Optional but recommended, in which case it must come first.
k
Key algorithm: rsa, the most common, or ed25519.
p
Public key, base64-encoded. An empty value means the key has been revoked.
t
Flags: y marks a key in testing, whose failures must not be penalized; s forbids its use for subdomains.

Each sending service publishes its key under its own selector (google, selector1, k1…), which allows several keys and seamless rotation. A 2048-bit RSA key is recommended today.

DMARC

DMARC (Domain-based Message Authentication, Reporting and Conformance) builds on SPF and DKIM. Published on _dmarc.ihg.com, it tells mail servers what to do with an e-mail that fails these checks (let it through, send it to spam or reject it) and where to send reports.

Example record

_dmarc.ihg.com  TXT  "v=DMARC1; p=quarantine; rua=mailto:[email protected]; adkim=r; aspf=r"

What the record contains

v=DMARC1
Identifies the record as a DMARC policy. It must come first.
p
Policy applied to e-mails that fail the checks: none (monitoring only), quarantine (spam folder) or reject.
sp
Subdomain policy. Without it, subdomains follow the domain's policy.
rua
Address that receives daily aggregate reports about e-mails sent on behalf of the domain, whether they pass the checks or not.
ruf
Address that receives detailed failure reports, message by message. Few providers still send them.
pct
Percentage of e-mails subject to the policy, for a gradual rollout. 100 by default.
adkim, aspf
DKIM and SPF alignment: r (relaxed, a subdomain of the same domain is enough) or s (strict, the domain must be identical).

To roll out DMARC without blocking legitimate e-mails, start with p=none and an rua address, analyze the reports to find every service sending on behalf of the domain, then move to quarantine and finally to reject.

DNS records of ihg.com

IP addresses (A and AAAA)

An A record maps the domain name to an IPv4 address: the address of the server that browsers contact to display the website. The AAAA record does the same for an IPv6 address. A domain can have several of them to spread visits across several servers.

TypeIP address
A2.22.251.40
A2.22.251.4
AAAA2a02:26f0:9100:10::6010:f998
AAAA2a02:26f0:9100:10::6010:f9b6

Name servers (NS)

NS records designate the authoritative DNS servers of the domain: they answer every question about its other records (A, MX, TXT…). They are provided by the registrar, the hosting provider or a dedicated DNS service, and several servers are declared so that the domain keeps working if one of them fails.

ServerIP address
a9-66.akam.net184.85.248.66
a26-67.akam.net23.74.25.67
a4-64.akam.net72.246.46.64
a16-66.akam.net23.211.132.66
a1-131.akam.net193.108.91.131
a5-65.akam.net95.100.168.65

Mail servers (MX)

MX records point to the servers that receive e-mails sent to the domain, that is to @ihg.com addresses. Each server has a priority: the one with the lowest number is tried first, the others take over if it fails. Without an MX record, the domain cannot receive e-mails.

PriorityServerIP address
0mxb-0036c501.gslb.pphosted.com148.163.139.129
0mxa-0036c501.gslb.pphosted.com148.163.135.129

TXT records

TXT records hold free text. They are used to prove ownership of the domain to online services (Google, Microsoft, Facebook…) and to publish e-mail security rules: SPF on the domain itself, DMARC on _dmarc.ihg.com.

NameContent
ihg.comSFMC--EnYHLGCCFpbwwCH3b_zASWE5eMV85v1gTEp1WXk
ihg.comonetrust-domain-verification=53fe4e288982463993225d64aa36b9dd
ihg.com_pingoneemail=ecc74604-525e-462d-833b-22b789433d3e_9043c246-a806-4f93-9c2a-7c272ade3741
ihg.comadobe-idp-site-verification=654d1890e56573968c853e36fc83f231f5baa963aa417365b427a72d88cb3765
ihg.comsterlingcheck-domain-verification=38318804f7754de8836311de1cc1e2f7
ihg.com00Dbf000002PrBG=1TBbf0000000Gb4
ihg.comprofound-domain-verification-gchqj6=x27xR9OzuqYY5Gx5x67RzrA6U
ihg.comMS=ms41678183
ihg.comamazonses:hgHSMkBvxXpm9XDb4/fez2ma5IuPpC7CSDYOpqiWCzg=
ihg.comaliyun-site-verification=36df2019-fa5a-4493-8763-9258d6cfbdfd
ihg.com00DhG0000007Rxx=1TBhG00000002rR
ihg.comairtable-verification=5b60792110a03186aa1146a0dcb54d10
ihg.combv-domain-verification=45ab5c02e05c9f9fd374b963b5c94de071aa8cdc7585fa44c7b4af6615e7e929
ihg.comadobe-idp-site-verification=10119d90-fd73-4d3b-9829-2e155c2c8c50
ihg.com00DO3000007SNUU=1TBO30000000KtB
ihg.comonetrust-domain-verification=84432776cbc1491a8d768919d5774841
ihg.comaliyun-site-verification=de208478-2a88-47e3-9afe-b6d5a3a18435
ihg.comDynatrace-site-verification=40f73b86-a5bd-4b6f-a71a-8ecd294fabe4__7fpbkm8d44oknfivgp5temr9rg
ihg.comanthropic-domain-verification-vgctad=S4ohU2VYXaKem4931ChoQXllm
ihg.com00D3i000000uT0G=1TB7y00000002OP
ihg.comanthropic-domain-verification-r8379w=MwTDYwK9sVBagdWPM1oJPonIi
ihg.comcisco-ci-domain-verification=13a1e87099e64542b8638edcc8bf8363597c164ca55733dae9f36fe2204a9d70
ihg.comliveramp-site-verification=cCVbfXk7tL2iezdP41I9_A2D1daw2uJKZVZwU0vY2ag
ihg.comapple-domain-verification=9UlZhGAVvPnC9H0W
ihg.commandrill_verify.6tUcrUAoJEVJVstu5IdqMA
ihg.com4fdb91c1174d51905488b7623da69b4ff0dd52fa9fbcee329dd6c1434ca824c9
ihg.comatlassian-domain-verification=KXMJ0mvs6ChyP/99oks6cx5S3sn6QkUtKoBidwbprtBVEzKZjEyVbQdCP0kaYn3a
ihg.com_pingoneemail=fa45e6e3-5208-4ff3-9506-6fe5725a3b7b_947864d9-934d-4456-80e2-6fd6145bc6a8
ihg.compaloaltonetworks-site-verification=867f57cb5a9013ae256c91da2d183e57f6562a0b128333830a86d1d0b5741633
ihg.com_95cas5x1cqh62ilj0tftsjvdfbnfz02
ihg.comatlassian-domain-verification=lpuDENy9ml3760iOA0L9mWIBGxSycNlWjHYeCLd4N8XNs+GFN9u1n8MeuLm7idYU
ihg.comsterlingcheck-domain-verification=d0becd31762c4a3ba8e83c7a61b2ac96
ihg.com_pingoneemail=c46ef3b3-b808-4bcf-b3e3-8a0358a804f1_521396dd-061c-408e-bb86-8deefe528caa
ihg.comairtable-verification=857d3b132cbb30d5bc2ca7409052bf8f
ihg.comv=spf1 include:_spf.ihg.com include:_spf.google.com include:amazonses.com include:spf.protection.outlook.com include:_spf.highradius.com ip4:148.163.135.129 ip4:216.133.255.190 ip4:147.154.153.87 ip4:138.1.67.161 ip4:138.1.65.17 -all
ihg.comsmartsheet-site-validation=FmC1y02mUa6SpP-mMJwk18I4MyaWCIJZ
ihg.comonetrust-domain-verification=ae321f5b23d246a7a44e0c55d3e3f159
ihg.comfacebook-domain-verification=q7hux9151ykqswfw28jyhh75nj34wn
ihg.comdocusign=f09029bd-260b-47ed-bb91-ab1ce43342ff
ihg.com_globalsign-domain-verification=UjWbXF1MGmkYKGMCMxfJzcsSn6XXNhe9ZYjxhY9CZs
ihg.comdocusign=81c7e767-e87d-4bd4-b17a-28b2d5815378
ihg.comopenai-domain-verification=dv-KBIObyWIFzdZ69Rjjy8PAfMY
ihg.comidmelon-domain-verification=hcrwLCCWr8CgalSxQae33SgPNVy8vXtSVaGLig2rr94fdvNY
ihg.comdocusign=78238a0b-bcea-4fee-b579-7122309e3632
ihg.com_s3hx46024aqezp7yszku2hj0eix6shm
_dmarc.ihg.comv=DMARC1; p=none; fo=1; rua=mailto:[email protected], mailto:[email protected]; ruf=mailto:[email protected]
google._domainkey.ihg.comv=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCm5+zr2aAdR1IzOOaQxZiGc+Xds2ai2X8uGAvRT7apA6Ur4M0ABQexO23JdnH4xwxulGzNykrBbduebD
k2._domainkey.ihg.comv=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA0b90ObWaLDc+i9MtTNmGeWO009hr20fIxhGg6XBT2kjZ1DTThopSe1nAndsupmcBwlQ5Q6LJ+ZAxLcujnPIxM0ZBLmgpkv8u6RfY4eFP8OLvdAW3oSuB0DyLDigQX4Sj8wBO4YIdQH6AAmBeOsidsKAFNFUCpc3vCxtBDR12U+cBg724l3sBkMQ8evnz6idnqxq9QAVYh8k4kJ+RP+6cqTdy7LjIm8xY/bQNpQIpGUAuDo2DjLcCDun9DAI4Q/3z+Q0o9QuQIDAQAB;
k3._domainkey.ihg.comv=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsYGiMSn7fsUqSvfSX40x9R1OlRtbNiCY80lHRIlcKx3XDIR7257aUx+q9CSIARdfTL6KCuLGNFx5g9TgVr6png4ajcieSQGtOehBgxnkDN8aAA5TX0FmFrcefJU0JoxLOF09EKgXxhSSHCk/ekVb0PXSboHXoZ9+EI404F1qhcwXXIgHXTaUthHTut2P6BBZhIXIgvDe/w49GchR7MRJqjNb7neEBbYHbgWuBTvvHCg7Gy6m6n9krYK+ROWq3dVvXy9plAGK3ygM+HtjIiMt7arRGMOF0WgDTz7YdN9BGpt6BvXxLnjiQcgS5T9n+cIyPZgiWzDMXNlaEEdKTEKxrwIDAQAB;
s1._domainkey.ihg.comk=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuIs4btI7ix0ypEnnOiZlsPSPecwGF56TsoGRURlXW3SQnaf9AJT3gHHtzhnHz/C4xZg6CBkEIm/Ri3ILLbXVOAaEl/2/LSzPbLsQ+0a5nVTin2fh7yUlJqctobPnzkBtprvtsriva9YiF2ebVg+XOmzN4a4y/qNaYQt5qkNYqcqH0GZPuTqqEpFNl2SWvuKzDbFClByI0sapRJD+0foBY+l0G9BiH2fAb6j6QiaagyHo4ZotPad7HHgiG56/tMH1DNvoswy21dzAXFV1CTiphahh9ntUmVFkJOSszPnTatp33Nt7XhmSQ98CeKDfLhOxd3n5jBZRgLGkLoSOJ/bUpwIDAQAB
s2._domainkey.ihg.comk=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtqAumCxR2Aiu1pVshZ5994ZK6vSYw10BMUXt9ft7GJWiSkXngT1ZVDwNRAnlC3OfgtfW9OZJafsUxkRfboLsosDOYvpY2s5+WK6ehDCOGKqTlJ4LWKkJqgml2xNPmcIbWXjtBUlYZc06CgsvglEzxlSkXiA0ogIsZBu9srqMpOZYmvmau8PN9ruiIGamleunoVwi5IfusmG0M1SxddyCxfVcAib0IxrieJMHElpkWh5H3xU8FAyE+W2vjDdOEZmQbKjzE9OpWKD27QPJmmJvT5PTRlZiEyp75S94CneZhuLuuJzIHVqiLN+yzP54t2R/9poMDcu39Yrlt7rNZqqTdQIDAQAB
mailjet._domainkey.ihg.comk=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC+mbWdH4QvKdQ0Q1A651kTbcWJVsBq39OsxqXBmEGjaB9/jN/WER6zyxsW51i1Wg+M3CgvkzWzb1qmEeLguFQvXhOUbEb0uOu6HUs4D952JKhZ/HkCSqpaao9IcWpQE21Bf4qGtdRtChg5pEvEPtNmCJHjrybxFEBxzbfvmjwebwIDAQAB
default._domainkey.ihg.comv=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCo9B9M5rdwh53QgvuQL/zznN4l9HJlWcbl5sImhdod0xTlBUfxVPs0F/OAtznX6kH90CdliHCCBc3thjtXQ51vVtvBh2qq/oeSokDFVOUWNrxzlV0yL6Q4Vc/8FrSSVDLaUqxVpb1xpb3cNz32kWlxTJPLuM6FKCGeZMDpKgoVNQIDAQAB
dk._domainkey.ihg.comv=DKIM1; p=MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAM1xusIe2p5oBmvP2Rgv1BOyQdr0h/TTPSE/qZ1iPmhuQLUGjvNwu+aKNRqUiByO3rlIX+TeDXJSXsYuitNT/OcCAwEAAQ==;

Related IP addresses

IPv4 addresses used by ihg.com: website, name servers, mail servers and senders authorized by SPF.

IP addressUsed for/24 block
2.22.251.40Website2.22.251.0/24
2.22.251.4Website2.22.251.0/24
184.85.248.66Name server a9-66.akam.net184.85.248.0/24
23.74.25.67Name server a26-67.akam.net23.74.25.0/24
72.246.46.64Name server a4-64.akam.net72.246.46.0/24
23.211.132.66Name server a16-66.akam.net23.211.132.0/24
193.108.91.131Name server a1-131.akam.net193.108.91.0/24
95.100.168.65Name server a5-65.akam.net95.100.168.0/24
148.163.139.129Mail server mxb-0036c501.gslb.pphosted.com148.163.139.0/24
148.163.135.129Mail server mxa-0036c501.gslb.pphosted.com, Authorized by SPF148.163.135.0/24
216.133.255.190Authorized by SPF216.133.255.0/24
147.154.153.87Authorized by SPF147.154.153.0/24
138.1.67.161Authorized by SPF138.1.67.0/24
138.1.65.17Authorized by SPF138.1.65.0/24

WHOIS of the domain ihg.com

Domain Name: IHG.COM
   Registry Domain ID: 1216027_DOMAIN_COM-VRSN
   Registrar WHOIS Server: whois.markmonitor.com
   Registrar URL: http://www.markmonitor.com
   Updated Date: 2026-04-01T10:26:09Z
   Creation Date: 1998-05-04T04:00:00Z
   Registry Expiry Date: 2027-05-03T04:00:00Z
   Registrar: MarkMonitor Inc.
   Registrar IANA ID: 292
   Registrar Abuse Contact Email: [email protected]
   Registrar Abuse Contact Phone: +1.2086851750
   Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
   Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
   Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
   Domain Status: serverDeleteProhibited https://icann.org/epp#serverDeleteProhibited
   Domain Status: serverTransferProhibited https://icann.org/epp#serverTransferProhibited
   Domain Status: serverUpdateProhibited https://icann.org/epp#serverUpdateProhibited
   Name Server: A1-131.AKAM.NET
   Name Server: A16-66.AKAM.NET
   Name Server: A26-67.AKAM.NET
   Name Server: A28-64.AKAM.NET
   Name Server: A5-65.AKAM.NET
   Name Server: A9-66.AKAM.NET
   DNSSEC: unsigned
   URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2026-10-02T08:25:43Z <<<

For more information on Whois status codes, please visit https://icann.org/epp

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