Dataweaz

twilio.com

Summary

Registrar
MarkMonitor Inc.
Status
clientDeleteProhibited
Created on
October 27, 2007
Expires on
October 27, 2028
Name servers
ns0.dnsmadeeasy.com, a11-64.akam.net, a1-83.akam.net, ns1.dnsmadeeasy.com, ns2.dnsmadeeasy.com, a24-65.akam.net
Mail servers
smtp.google.com
DMARC
Reject
SPF
Soft

Spoofing protection (DMARC)

Reject

E-mails spoofing this domain are rejected.

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

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

Record

v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]

Authorized senders (SPF)

Soft

E-mails sent by any other server are accepted but flagged as suspicious.

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

RuleValueResult
includetwilio.com._nspf.vali.emailAllowed
include%{i}._ip.%{h}._ehlo.%{d}._spf.vali.emailAllowed
all—Suspicious

Top-level DNS lookups: 2 of 10 allowed

Record

v=spf1 include:twilio.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all

E-mail signing (DKIM)

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

SelectorLikely serviceKeyStatus
k1MailchimpRSA 1024 bits · shortActive
k2MailchimpRSA 2048 bitsActive
k3MailchimpRSA 2048 bitsActive
s1SendGridRSA 2048 bitsActive
s2SendGridRSA 1024 bits · shortActive
zendesk1ZendeskRSA 2048 bitsActive
zendesk2ZendeskRSA 2048 bitsActive
smtp—RSA 1024 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 twilio.com arrive; SPF, DKIM and DMARC let mail servers check that an e-mail claiming to come from twilio.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 @twilio.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

twilio.com  MX  10 mx1.twilio.com.
twilio.com  MX  20 mx2.twilio.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.twilio.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

twilio.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.twilio.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.twilio.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.twilio.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.twilio.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 twilio.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.

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
ns0.dnsmadeeasy.com208.94.148.2
a11-64.akam.net84.53.139.64
a1-83.akam.net193.108.91.83
ns1.dnsmadeeasy.com208.80.124.2
ns2.dnsmadeeasy.com208.80.126.2
a24-65.akam.net2.16.130.65

Mail servers (MX)

MX records point to the servers that receive e-mails sent to the domain, that is to @twilio.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
0smtp.google.com108.177.15.27

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.twilio.com.

NameContent
twilio.comdocusign=f8706246-75ff-46d8-a204-e54e1803b2e8
twilio.comMS=3F23BCCFCBA21AAD5F86C2F70892F3FA663AB0B6
twilio.comdrift-domain-verification=037d796c2fb963479b208d9589d914d89464ce0a62d2d3ce4a0fca032822d1a3
twilio.comdropbox-domain-verification=hqr3zthw8xty
twilio.comopenai-domain-verification=dv-660q3F4hQWHD70dOGQbDqmNZ
twilio.comgoogle-site-verification=bM-rhtBCm6TIyWkPJYC3iFZoxbZovlvpk1yr_0HIvS0
twilio.comatlassian-domain-verification=W7l5tMItTm4lNEq8QOucCxLdAbqWNuMG6fHGtkVrN1HsVvbh7EyRFF6gNLpiUgdB
twilio.comatlassian-domain-verification=kZjnh7EbCCFuwNJggkbSlB7z9mNrZWe3mkTow6/YMhjtTcfRM0NecIsYYX11undU
twilio.comcanva-site-verification=MEs-7JGKac7VRzKB54S5Kg
twilio.comfirebase=video-app-79418
twilio.comglobalsign-domain-verification=Mu0l5q7-DpNUoQavDtNZzf0uJbIEPoIvjC3sh0RVs4
twilio.comonetrust-domain-verification=4ce11987a86b4e0dbd19e37653d62f67
twilio.comkeybase-site-verification=bSkY9Ol3WL1ofhJnH_cjty8u3H1w823Iuu0F6M7UyQs
twilio.comadobe-idp-site-verification=fffd1134c05fcc6abf6abba35358da8d4e9de6c430aff005e34a001ce9bba1c9
twilio.comapple-domain-verification=49jLbFA6xLVS1fkP
twilio.comv=spf1 include:twilio.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
twilio.comwework-site-verification=Ts9SCSJkkLmOvzCP
twilio.com00D400000008nJq=1TBVr0000000Jtt
twilio.com59b8eec3-90c4-4dd1-b37d-1996dd18c5cd
twilio.comgoogle-site-verification=kmSE1Jv0PlKHn28y-gpZYDqYcnu7TGNlONXeQSXPQN8
twilio.comstatus-page-domain-verification=4zrkrcj7tvnq
twilio.comverification_token=TNfAx3HVrmiogtlxmgPbLsatH
twilio.commiro-verification=8aebed113835965c11f5d3efdcf41f0f76783644
twilio.combugcrowd-verification=3969d81794536747ab8161a0b2fd0643
twilio.comfacebook-domain-verification=3uqw7lrpq6cfmnktca43mpxfj0g28d
twilio.comdropbox-domain-verification=dgonrkgysano
twilio.com00Di0000000cxWv=1TBPU00000005J4
twilio.comMS=ms26172148
twilio.comsegment-site-verification=3Wcs67F61NFgMQVYs1r4YGFb6wFblu0v
twilio.commixpanel-domain-verify=2e11ad0f-d070-4c8d-83f4-0158986cf75c
twilio.comgather-domain-verification=29a3210e-0507-483e-b475-c43d7ac90197
twilio.comsegment-site-verification=E8tmyWjOlO0KoUvUJ0UsO65V3d33Xow1
twilio.comgoogle-site-verification=Rfi2Zz33oxseY2WQ0joWtfJM6F5HQsr1Ot6kweOKSlE
twilio.comstripe-verification=32B307D1EC168D65D277C73A454B6CD633FD31EE3BCFB5224C8C8C1D34D11440
twilio.comgoogle-site-verification=aYAie_U7Bmz0fF3bArdMXDa2NnMIj6c7ZZjruQdrQFs
twilio.comelevenlabs=jmfUYfN3P0JZ73UtSA2GQT9CALvzuQqmYzIcGuvhu-c
twilio.comtraction-guest=90dfe42d-e4f2-43e0-b512-335ee3d5c889
twilio.comvmware-cloud-verification-e92a5542-59e1-45be-b4e6-dc115eafd1ad
twilio.comloom-site-verification=7b6d0f7c1acd40d49aca8240ec39bfae
twilio.compostman-domain-verification=f0b8d730f5c76f2cf6029aac31e0f8da6306d8eaa115de86bde3ebaa52117090e5e58e45983bb40028bdfc80d5340c56fc0f82088de3b1ea8b2c3d044eae2be3
twilio.comanthropic-domain-verification-az2gvc=09vnyAMIwiYq5irLNebDImQAG
twilio.comh1-domain-verification=J2qsDnS3ux5yHUVC87BfU7VfHxTUkMWaYCZKKwW4GjG3sHui
twilio.comteamviewer-sso-verification=754b8ddf2c41471fb3ae968eca176dbe
_dmarc.twilio.comv=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]
k1._domainkey.twilio.comk=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i89sA2guU0ta4UX1Xzm06XIU6iBP41VwmPwBGRNofhBVR+e6WHUoNyIR4Bn84LVcfZE20rmDeXQblIupNWBqLXM1Q+VieI/eZu/7k9/vOkLSaQQdml4Cv8lb3PcnluMVIhQIDAQAB;
k2._domainkey.twilio.comv=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA0b90ObWaLDc+i9MtTNmGeWO009hr20fIxhGg6XBT2kjZ1DTThopSe1nAndsupmcBwlQ5Q6LJ+ZAxLcujnPIxM0ZBLmgpkv8u6RfY4eFP8OLvdAW3oSuB0DyLDigQX4Sj8wBO4YIdQH6AAmBeOsidsKAFNFUCpc3vCxtBDR12U+cBg724l3sBkMQ8evnz6idnqxq9QAVYh8k4kJ+RP+6cqTdy7LjIm8xY/bQNpQIpGUAuDo2DjLcCDun9DAI4Q/3z+Q0o9QuQIDAQAB;
k3._domainkey.twilio.comv=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsYGiMSn7fsUqSvfSX40x9R1OlRtbNiCY80lHRIlcKx3XDIR7257aUx+q9CSIARdfTL6KCuLGNFx5g9TgVr6png4ajcieSQGtOehBgxnkDN8aAA5TX0FmFrcefJU0JoxLOF09EKgXxhSSHCk/ekVb0PXSboHXoZ9+EI404F1qhcwXXIgHXTaUthHTut2P6BBZhIXIgvDe/w49GchR7MRJqjNb7neEBbYHbgWuBTvvHCg7Gy6m6n9krYK+ROWq3dVvXy9plAGK3ygM+HtjIiMt7arRGMOF0WgDTz7YdN9BGpt6BvXxLnjiQcgS5T9n+cIyPZgiWzDMXNlaEEdKTEKxrwIDAQAB;
s1._domainkey.twilio.comk=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvKoqbzKoi2rFjHGSbK7IW0FiGEiVj9fLlZM+pSx6kuJpWnBebnUVb0NZ/mMd2WCZTnemzpAX1z+xZbaVMHGzRkhNQ0pIByxX2CcZUSJ5fCO1Po4L+zxLqXsY4gAg/DQFERXnbUqoUVpQI2x4Zsmk2hq28AG+0xxY+TAHPQlbef2UdfbfNGwhQXNTZ4w6juOdf48nvotT7rDrM1smpaEuHFZFspsLzuk+ETFkeEZm5/sTXqXb4qWr+jHmoH8Hn0Ry2XwIhXXFI02mX/hbLAJ9hAg3RRIx5wNn4feF5Vlh0LalfXqj+bLtxbSKeFPcOZ656IjMtAtcuCYzwJLBVx2FewIDAQAB
s2._domainkey.twilio.comk=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCz92Oo3zoEvYIDKhlQfxvK0+BjLAVCIpJ7QN6/0GomZ08r4doeC4PYXKBz+jZwe2AdI0c8VeDkMMcrd3GWoW+owHlGZvG9FMo+YDWMexZqgjlC2AjL44sDIOMUQGqtTZ5PFmFQr+UlDWAWkb12+NW+VAcAiH6JtaJU7HN/40SsgwIDAQAB
zendesk1._domainkey.twilio.comv=DKIM1;t=s;n=core;k=rsa;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9IqdLrO3Zr2/56MHt8oQVCQorP0Bl2Fz9sM2tFBnJCdB/HogQmuudEg2xAovCN2PYpw44UijIvPuBoT9vxiv6ZCBJTLJXa82r6ke5rE4tbe9NKFIrVIb9S306cJDrnKFMDb8p0dU/Su0+eUR5gVAOtCuz2L8HAzs5edvsEvD/Fb4ny1RLNSEPZkIQLfGhVxQeWANm3+1Jwb/OBVXV9k0nKpWrpgqcmO7NzroJirp014RQY7rGi60JLUubc6XhvoFQBQrtOAdVlZC5wvfS1bgpq5kQpdP7cajIqWCeqxPTeo0ZUpey2ZcaygEsZz0Z3Gs5wDzyuqd7/ADpr2jNF7ozwIDAQAB
zendesk2._domainkey.twilio.comv=DKIM1; t=s; n=core; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmiSFNkgXrO3I8aOaPONDZWHv027rkiGIwb838OyXPgvFDEkCV/qGcdXSjZnaVAadrTm/oKnL8WOltP9zB1FLEuKt0fTi5zRyKPE4oIYCnEzXwrGqzjUcCABQBawQVqvXjDOaYh9Lhp8W5PYOLo905vRW7ipyIMDhuzBOJls91/WWXnNK0OwP3RghiisZjA3K2KqtRwf7w6GjNeNuAMNhvcmgAN15d/mhK+dev/hcRbal66RoYyTD8c0F0isahWH0envEX8aj+SBhheNk0/U37dGE+4nFaY5yP9CUlYjFKDSIKZgHzG4Hci3t/RubU58pi6BCrQQdAFvIOeDFeCZ0ywIDAQAB
smtp._domainkey.twilio.comv=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC+9ssKOsTrfewtF1DWHYRky2x43SW3zv611Vsp1U1/Xkn9sZD3Gqowl3X5xaBkN/GcWcCMHmiZmXqPB503XWQf5edEQmTG1iFSD83nrnzvVFcafjpVm2yOkXsT0yp6bO/bWo9c82IUFq7aZcj58C+QCMO05gunD2TI5hna1SJb8wIDAQAB

Related IP addresses

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

IP addressUsed for/24 block
44.199.52.48Website44.199.52.0/24
35.168.222.240Website35.168.222.0/24
52.6.206.82Website52.6.206.0/24
208.94.148.2Name server ns0.dnsmadeeasy.com208.94.148.0/24
84.53.139.64Name server a11-64.akam.net84.53.139.0/24
193.108.91.83Name server a1-83.akam.net193.108.91.0/24
208.80.124.2Name server ns1.dnsmadeeasy.com208.80.124.0/24
208.80.126.2Name server ns2.dnsmadeeasy.com208.80.126.0/24
2.16.130.65Name server a24-65.akam.net2.16.130.0/24
108.177.15.27Mail server smtp.google.com108.177.15.0/24

WHOIS of the domain twilio.com

Domain Name: TWILIO.COM
   Registry Domain ID: 1300443507_DOMAIN_COM-VRSN
   Registrar WHOIS Server: whois.markmonitor.com
   Registrar URL: http://www.markmonitor.com
   Updated Date: 2026-09-24T12:58:09Z
   Creation Date: 2007-10-26T22:26:18Z
   Registry Expiry Date: 2028-10-26T22:26:18Z
   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: A1-83.AKAM.NET
   Name Server: A11-64.AKAM.NET
   Name Server: A24-65.AKAM.NET
   Name Server: NS0.DNSMADEEASY.COM
   Name Server: NS1.DNSMADEEASY.COM
   Name Server: NS2.DNSMADEEASY.COM
   DNSSEC: unsigned
   URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2026-10-01T18:19:13Z <<<

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

NOTICE: The expiration date displayed in this record is the date the
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