indypl.org - DNS, WHOIS, DMARC and SPF of the domain name

Summary

Registrar: NameCheap, Inc.
Status: clientTransferProhibited
Created on: October 27, 2010
Expires on: October 27, 2026
Name servers: pentos.indypl.org, london.indypl.org
Mail servers: mx1.indypl.org, mx2.indypl.org
DMARC: Monitoring
SPF: Strict
DKIM: 4 keys found
Website: See the website

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 indypl.org but fails SPF and DKIM checks.

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

Record

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

Authorized senders (SPF)

Strict

E-mails sent by any other server are rejected.

SPF lists the servers allowed to send e-mails for indypl.org.

Rule	Value	Result
mx	—	Allowed
ip4	131.239.7.25	Allowed
ip4	12.50.4.25	Allowed
ip4	131.239.7.64	Allowed
include	spf.protection.outlook.com	Allowed
include	spf.mailjet.com	Allowed
include	_spf.wpcloud.com	Allowed
include	amazonses.com	Allowed
include	librarymsg.com	Allowed
all	—	Rejected

Top-level DNS lookups: 6 of 10 allowed

Record

v=spf1 mx ip4:131.239.7.25 ip4:12.50.4.25 ip4:131.239.7.64 include:spf.protection.outlook.com include:spf.mailjet.com include:_spf.wpcloud.com include:amazonses.com include:librarymsg.com -all

E-mail signing (DKIM)

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

Selector	Likely service	Key	Status
selector1	Microsoft 365	RSA 1024 bits · short	Active
s1	SendGrid	RSA 2048 bits	Active
s2	SendGrid	RSA 2048 bits	Active
mailjet	Mailjet	RSA 1024 bits · short	Active

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 indypl.org arrive; SPF, DKIM and DMARC let mail servers check that an e-mail claiming to come from indypl.org 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 @indypl.org 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

indypl.org  MX  10 mx1.indypl.org.
indypl.org  MX  20 mx2.indypl.org.

What the record contains

10, 20: Priority: the server with the lowest number is tried first. Servers with equal priority share the load.
mx1.indypl.org.: 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

indypl.org  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.indypl.org, 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.indypl.org  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.indypl.org, 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.indypl.org  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 indypl.org

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.

Type	IP address
A	131.239.7.30

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.

Server	IP address
pentos.indypl.org	12.50.4.20
london.indypl.org	131.239.7.20

Mail servers (MX)

MX records point to the servers that receive e-mails sent to the domain, that is to @indypl.org 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.

Priority	Server	IP address
20	mx1.indypl.org	131.239.7.25
20	mx2.indypl.org	12.50.4.25

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.indypl.org.

Name	Content
indypl.org	jwqdgkz1njpm4xphcn0qw1lv5gsrbx32
indypl.org	z8mkmbq42pfk4drv5lhn2z6s9c2ly5cq
indypl.org	vszwcv80x1sfzc4tgd06hsk1zrvtybj9
indypl.org	cisco-ci-domain-verification=1975b40ff9d6dead1d6ce933da2a84ada41cad222ed3524cd345465a36750124
indypl.org	airtable-verification=c30193d25998dbdaa5690407afc6e937
indypl.org	9Hu18qxrgyU97yS350tnj08kWyFzHqJ3A2RYPRwSfQ5NYW9DYxI7ULllYXWGf8kHrLgg/sH2 VubdSIGD4h+AgA==
indypl.org	4g5lsjs66vf54hlltr232f9yqb0696t2
indypl.org	fzlqy755plbpwhb07qq29qb383f44v12
indypl.org	MS=6037ADB71D1212BD218A74DAC9779CF0F90D2F09
indypl.org	v=spf1 mx ip4:131.239.7.25 ip4:12.50.4.25 ip4:131.239.7.64 include:spf.protection.outlook.com include:spf.mailjet.com include:_spf.wpcloud.com include:amazonses.com include:librarymsg.com -all
indypl.org	fydp0g12b02zvpnqxxwczm0qv7fvfq1w
indypl.org	4k10vjxnkmbflzpklxn553n06lpkn0xv
_dmarc.indypl.org	v=DMARC1; p=none; sp=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
selector1._domainkey.indypl.org	v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC26DWjRO8JogTWUId4+C+upBJzp6/NXfp3z31pXLORri8CMlOTX/eMXg9/Pwk140cMWHdgXBSuyPluVOZtF34dN5AUnAdMSPXDeZBYGX5MAwTuO7CgZSwRn60dpJRzA6ZLHKM+rviF+3CZZ+eysA034p5amKtbcjLZsMjMGjdBdwIDAQAB;
s1._domainkey.indypl.org	k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA81r9TUdWESm75VDyRMb7w1ySUqFyRXIXkk/mEQ+fSQMi6DgnwTVu7WV1MKIo1rAVWV+qUTASJhNXN70AuFcMCl66Qvy+C6Wr1YqM5qoeixJGxFeSd1OjHzFKYcgV1+s17s71jMtqCI3ILsLNHsUdzjmCOpRJWhMtid0C1lROSUYuYyKd5VlRtwf4bNF4WKoM90bt37ncEvCKV4hTakKNMWPqOUNHV/Eqcm3DMn2BArxyO9vnhpllwDZPw70da/hRjrq3/GvKkmCuC6+w9mVvUtLMAJAdCfLh13hpLhYV111ICWzehxky7IBy1aIJObIKI2s99FcEJQ6CBKgBZePgSwIDAQAB
s2._domainkey.indypl.org	k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA25u3kMCLd6BA61gYxALW/qxnehfd6Yr5iooLISQSiqjx09qCx20D+VjZApyzYinZ9v1xWoGvHi13zNsuRJ8Yae+4ePvc27AnAy0oP560h4EWcIEalWBAZuke4Gj0jbLq60BX6Ekh29W7ByIqjfhdn28rRlhDDPKZK1utSp76QH4951EjOF9M4bJFZ9mkcycxE8t/ngqrIHS97HDFaxtBqAu0zDLxr3JlXM33fRfau//6rEvlhDdvKF+IRDK5D52QDMiH1kJ70c8p52iwUACIMm88z2fQ4Qwd3Xo1962muoQ8P1A3ye9tuwpIUJBDYLTyM9RyCbqPnGWczXpX291f/wIDAQAB
mailjet._domainkey.indypl.org	k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCc5BFX5ZFL/XFeP9Na4qI5vnIRTVgDkax35RyXIdhaJudjNVOCCZV2lGAEf2hsChp8MmeGbp8SUmAZwS+JySOX3stgJblD9qUDImvOiN2EU5RrD0EQDnwAjeppsDa7K/THQX70JS41T/joWleHCxzcFY6IuTbHJKgFEBquVGRlRQIDAQAB

Related IP addresses

IPv4 addresses used by indypl.org: website, name servers, mail servers and senders authorized by SPF.

IP address	Used for	/24 block
131.239.7.30	Website	131.239.7.0/24
12.50.4.20	Name server pentos.indypl.org	12.50.4.0/24
131.239.7.20	Name server london.indypl.org	131.239.7.0/24
131.239.7.25	Mail server mx1.indypl.org, Authorized by SPF	131.239.7.0/24
12.50.4.25	Mail server mx2.indypl.org, Authorized by SPF	12.50.4.0/24
131.239.7.64	Authorized by SPF	131.239.7.0/24

WHOIS of the domain indypl.org

Domain Name: indypl.org
Registry Domain ID: REDACTED
Registrar WHOIS Server: whois.namecheap.com
Registrar URL: http://www.namecheap.com
Updated Date: 2026-08-12T01:22:03Z
Creation Date: 2010-10-27T19:17:40Z
Registry Expiry Date: 2026-10-27T19:17:40Z
Registrar: NameCheap, Inc.
Registrar IANA ID: 1068
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +1.9854014545
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: london.indypl.org
Name Server: pentos.indypl.org
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://icann.org/wicf/
>>> Last update of WHOIS database: 2026-10-02T05:15:36Z <<<

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

Terms of Use: Access to Public Interest Registry WHOIS information is provided to assist persons in determining the contents of a domain name registration record in the Public Interest Registry registry database. The data in this record is provided by Public Interest Registry for informational purposes only, and Public Interest Registry does not guarantee its accuracy. This service is intended only for query-based access. You agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to (a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the data recipient's own existing customers; or (b) enable high volume, automated, electronic processes that send queries or data to the systems of Registry Operator, a Registrar, or Identity Digital except as reasonably necessary to register domain names or modify existing registrations. All rights reserved. Public Interest Registry reserves the right to modify these terms at any time. By submitting this query, you agree to abide by this policy.  The Registrar of Record identified in this output may have an RDDS service that can be queried for additional information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Domain name: indypl.org
Registry Domain ID: f89357137709457890a20851c3c45644-LROR
Registrar WHOIS Server: whois.namecheap.com
Registrar URL: http://www.namecheap.com
Updated Date: 2025-08-19T17:12:40.36Z
Creation Date: 2010-10-27T19:17:40.24Z
Registrar Registration Expiration Date: 2026-10-27T19:17:40.24Z
Registrar: NAMECHEAP INC
Registrar IANA ID: 1068
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +1.9854014545
Reseller: NAMECHEAP INC
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: 
Registrant Name: Indianapolis-Marion County Public Library
Registrant Organization: Indianapolis-Marion County Public Library
Registrant Street: 2450 N MERIDIAN ST 
Registrant City: Indianapolis
Registrant State/Province: IN
Registrant Postal Code: 46208-5732
Registrant Country: US
Registrant Phone: +1.3172754901
Registrant Phone Ext: 
Registrant Fax: +1.9999999999
Registrant Fax Ext: 
Registrant Email: [email protected]
Registry Admin ID: 
Admin Name: Indianapolis-Marion County Public Library
Admin Organization: 
Admin Street: 2450 North Meridian Street 
Admin City: Indianapolis
Admin State/Province: IN
Admin Postal Code: 46206-0211
Admin Country: US
Admin Phone: +1.3172754901
Admin Phone Ext: 
Admin Fax: 
Admin Fax Ext: 
Admin Email: [email protected]
Registry Tech ID: 
Tech Name: Indianapolis-Marion County Public Library
Tech Organization: Indianapolis-Marion County Public Library
Tech Street: 2450 N MERIDIAN ST 
Tech City: Indianapolis
Tech State/Province: IN
Tech Postal Code: 46206-0211
Tech Country: US
Tech Phone: +1.3172754901
Tech Phone Ext: 
Tech Fax: +1.9999999999
Tech Fax Ext: 
Tech Email: [email protected]
Name Server: london.indypl.org
Name Server: pentos.indypl.org
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2026-10-01T18:15:38.47Z <<<
For more information on Whois status codes, please visit https://icann.org/epp

% Query time: 2554 msec
% WHEN: Fri Oct 02 05:15:36 UTC 2026