Dataweaz

smooth.tech

Summary

Registrar
GoDaddy.com, LLC
Status
clientTransferProhibited
Created on
July 5, 2017
Expires on
July 6, 2027
Name servers
ns-820.awsdns-38.net, ns-2004.awsdns-58.co.uk, ns-1094.awsdns-08.org, ns-135.awsdns-16.com
Mail servers
aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt4.aspmx.l.google.com, alt3.aspmx.l.google.com
DMARC
Quarantine
SPF
Soft
DKIM
2 keys found
Website
See the website

Spoofing protection (DMARC)

Quarantine

E-mails spoofing this domain are sent to spam.

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

Policy
Quarantine
Subdomain policy
Quarantine
Messages covered
100%
DKIM alignment
Relaxed
SPF alignment
Relaxed
Aggregate reports
—
Failure reports
—

Record

v=DMARC1; p=quarantine;

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 smooth.tech.

RuleValueResult
include_spf.google.comAllowed
include8751094.spf06.hubspotemail.netAllowed
includesendgrid.netAllowed
all—Suspicious

Top-level DNS lookups: 3 of 10 allowed

Record

v=spf1 include:_spf.google.com include:8751094.spf06.hubspotemail.net include:sendgrid.net ~all

E-mail signing (DKIM)

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

SelectorLikely serviceKeyStatus
s1SendGridRSA 2048 bitsActive
s2SendGridRSA 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 smooth.tech arrive; SPF, DKIM and DMARC let mail servers check that an e-mail claiming to come from smooth.tech 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 @smooth.tech 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

smooth.tech  MX  10 mx1.smooth.tech.
smooth.tech  MX  20 mx2.smooth.tech.

What the record contains

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

smooth.tech  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.smooth.tech, 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.smooth.tech  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.smooth.tech, 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.smooth.tech  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 smooth.tech

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
A16.52.18.170

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
ns-820.awsdns-38.net205.251.195.52
ns-2004.awsdns-58.co.uk205.251.199.212
ns-1094.awsdns-08.org205.251.196.70
ns-135.awsdns-16.com205.251.192.135

Mail servers (MX)

MX records point to the servers that receive e-mails sent to the domain, that is to @smooth.tech 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
1aspmx.l.google.com108.177.15.26
5alt1.aspmx.l.google.com192.178.213.26
5alt2.aspmx.l.google.com142.251.127.27
10alt4.aspmx.l.google.com142.250.147.27
10alt3.aspmx.l.google.com172.253.148.27

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.smooth.tech.

NameContent
smooth.techMS=C262130572C2AB8AF484184D93C5E1E0E765B8D4
smooth.techv=spf1 include:_spf.google.com include:8751094.spf06.hubspotemail.net include:sendgrid.net ~all
smooth.techdetectify-verification=35f7d63302fb0eea43faff0571b2de79
smooth.techgoogle-site-verification=AyAAc-gKMSkfAfpTl4goJ1tKf1U7qVKl24iDe6nW9k4
smooth.techapple-domain-verification=XqRjNdqBSDDCTOtE
_dmarc.smooth.techv=DMARC1; p=quarantine;
s1._domainkey.smooth.techk=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAt9QHkrDDqPTafDG3oN3lnw0qSSHRwYZRstsXUxolsN3C3A75ThMT2kfoRtPLp0fYU+FmxOE1E9SonSWFa8xr3eVv/2TvesMr637lgrpPxpQgnnjb2h0sFK1MuI3SBHK8dCC5eBAv95VCX2nlT8hQVhKrln5H7TN9C1YnehN20U5dDPy7YG6yLIcappbnQbYUPzH8DbVj7yNQ09mjWVyO61iVMrmb45DU8JYQWD0O8dGO5HOxwJgoxSXu9G388dmh/DR3H/dnYUsc36niVW+FY9eBEkZKFMX4xLvjXIHAPLVWXsjTIeW5FahwlP0/aEbN4kGV9LaeYjk+eoXhlq8SoQIDAQAB
s2._domainkey.smooth.techk=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC0tn+803YBnAxCkJGH7AeXlFPOOcnRXxJZAr/loNsBx6r3T4/+SybOG4+QENcAGwqqr7v/hJ9dDUsQHY5Lm6qBd9rp/hUPiNuNN70SpgrOevz40VC0mwzRapmQ7lTHljmPjcbt5hsuylrzAymX6UbRmkfiwzZfk7J4FzUDqF6RPwIDAQAB

Related IP addresses

IPv4 addresses used by smooth.tech: website, name servers, mail servers and senders authorized by SPF.

IP addressUsed for/24 block
16.52.18.170Website16.52.18.0/24
205.251.195.52Name server ns-820.awsdns-38.net205.251.195.0/24
205.251.199.212Name server ns-2004.awsdns-58.co.uk205.251.199.0/24
205.251.196.70Name server ns-1094.awsdns-08.org205.251.196.0/24
205.251.192.135Name server ns-135.awsdns-16.com205.251.192.0/24
108.177.15.26Mail server aspmx.l.google.com108.177.15.0/24
192.178.213.26Mail server alt1.aspmx.l.google.com192.178.213.0/24
142.251.127.27Mail server alt2.aspmx.l.google.com142.251.127.0/24
142.250.147.27Mail server alt4.aspmx.l.google.com142.250.147.0/24
172.253.148.27Mail server alt3.aspmx.l.google.com172.253.148.0/24

WHOIS of the domain smooth.tech

Domain Name: smooth.tech
Registry Domain ID: D49202384-CNIC
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: https://godaddy.com
Updated Date: 2026-08-20T00:05:03.912Z
Creation Date: 2017-07-05T13:58:59.000Z
Registry Expiry Date: 2027-07-05T23:59:59.000Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: 
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: ns-1094.awsdns-08.org
Name Server: ns-135.awsdns-16.com
Name Server: ns-2004.awsdns-58.co.uk
Name Server: ns-820.awsdns-38.net
DNSSEC: unsigned
URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf

>>> Last update of WHOIS database: 2026-10-02T11:22:28.081Z <<<

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

The WHOIS information provided in this page has been redacted
in compliance with ICANN's Temporary Specification for gTLD
Registration Data.

The data in this record is provided by Tucows Registry for informational
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Domain Name: smooth.tech
Registry Domain ID: D49202384-CNIC
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: https://www.godaddy.com
Updated Date: 2026-07-06T12:29:38Z
Creation Date: 2017-07-05T13:58:59Z
Registrar Registration Expiration Date: 2027-07-05T23:59:59Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: [email protected]
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: CR797810442
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=smooth.tech&action=contactDomainOwner
Registry Tech ID: CR797810448
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=smooth.tech&action=contactDomainOwner
Name Server: NS-1094.AWSDNS-08.ORG
Name Server: NS-135.AWSDNS-16.COM
Name Server: NS-2004.AWSDNS-58.CO.UK
Name Server: NS-820.AWSDNS-38.NET
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2026-10-02T11:22:28Z <<<
For more information on Whois status codes, please visit https://icann.org/epp

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% Query time: 767 msec
% WHEN: Fri Oct 02 11:22:27 UTC 2026