Dataweaz

odu.edu

Summary

Registrar
—
Status
Created on
November 5, 1986
Expires on
July 31, 2027
Name servers
ns12.odu.edu, ns11.odu.edu, ns2.odu.edu, ns1.odu.edu
Mail servers
odu-edu.mail.protection.outlook.com
DMARC
Quarantine
SPF
Soft
DKIM
4 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 odu.edu but fails SPF and DKIM checks.

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

Record

v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1

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 odu.edu.

RuleValueResult
mx—Allowed
include_spf.google.comAllowed
includespf.protection.outlook.comAllowed
include_spf.salesforce.comAllowed
includespf.elluciancloud.comAllowed
ip4128.82.55.16Allowed
ip434.205.61.72Allowed
ip454.88.200.251Allowed
all—Suspicious

Top-level DNS lookups: 5 of 10 allowed

Record

v=spf1 mx include:_spf.google.com include:spf.protection.outlook.com include:_spf.salesforce.com include:spf.elluciancloud.com ip4:128.82.55.16 ip4:34.205.61.72 ip4:54.88.200.251 ~all

E-mail signing (DKIM)

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

SelectorLikely serviceKeyStatus
googleGoogle WorkspaceRSA 2048 bitsActive
selector2Microsoft 365RSA 2048 bitsActive
s1SendGridRSA 2048 bitsActive
s2SendGridRSA 2048 bitsActive

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

odu.edu  MX  10 mx1.odu.edu.
odu.edu  MX  20 mx2.odu.edu.

What the record contains

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

odu.edu  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.odu.edu, 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.odu.edu  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.odu.edu, 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.odu.edu  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 odu.edu

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
A23.185.0.1
AAAA2620:12a:8001::1
AAAA2620:12a:8000::1

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
ns12.odu.edu18.211.192.111
ns11.odu.edu184.73.26.141
ns2.odu.edu128.82.95.14
ns1.odu.edu128.82.95.13

Mail servers (MX)

MX records point to the servers that receive e-mails sent to the domain, that is to @odu.edu 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
10odu-edu.mail.protection.outlook.com40.93.192.4

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.odu.edu.

NameContent
odu.edue2ma-verification=rochb
odu.edue2ma-verification=uschb
odu.edue2ma-verification=1atgb
odu.eduanthropic-domain-verification-wr6n89=YCPqfiTpGHheBh38S9nCfwdAQ
odu.edue2ma-verification=9csgb
odu.edue2ma-verification=pdhib
odu.edue2ma-verification=nlnib
odu.edue2ma-verification=mslib
odu.eduhave-i-been-pwned-verification=386751bf5b0277804885366051a8c4b4
odu.edue2ma-verification=lihib
odu.edutwilio-domain-verification=44204bc9aa9c9806a92fd1f68dfc62cd
odu.eduv=spf1 mx include:_spf.google.com include:spf.protection.outlook.com include:_spf.salesforce.com include:spf.elluciancloud.com ip4:128.82.55.16 ip4:34.205.61.72 ip4:54.88.200.251 ~all
odu.edue2ma-verification=n9kib
odu.eduatlassian-domain-verification=v3HLeQMslSSmKSqWXlryLoH9/TwdItjNccNEAdwNtvrOPmll99aon9WMYPbpC3xJ
odu.edue2ma-verification=wthib
odu.edue2ma-verification=olnib
odu.educisco-ci-domain-verification=110425cd11b8071de313d5071afbc25696f75e6c77573cb1c48bd6a4d711aac5
odu.edue2ma-verification=2atgb
odu.edutkXqh+MUYm63QRwLF7ZaFXuopLOt8BwBfw3olAZw2Bo6M+PqXErIC/Dyee/CkXYYYRF+ibwf9YcVb3b9CNPuKQ==
odu.edue2ma-verification=1liib
odu.edudocusign=922cf7cd-090e-44b9-a811-d1e4f38cdc61
odu.edue2ma-verification=ujchb
odu.edue2ma-verification=adsgb
odu.edudocusign=619cf7b6-18e4-44a8-8b50-cc9984b607a7
odu.edue2ma-verification=qcsgb
odu.edue2ma-verification=i3dhb
odu.edufacebook-domain-verification=dwg8mjggpiec6nfgjl6nvlfp7wchvs
odu.edue2ma-verification=7llib
odu.edue2ma-verification=bdsgb
odu.edue2ma-verification=jslib
odu.edue2ma-verification=3ytgb
odu.eduadobe-idp-site-verification=c031cae951ab621bf601a5aac4f3311822837f7a997b27439145b3994573396a
odu.edu4969E71151B5682BC27379F18D0E1296
odu.edue2ma-verification=5slib
odu.edue2ma-verification=cpiib
odu.edue2ma-verification=x2kib
odu.edue2ma-verification=m4kib
odu.edue2ma-verification=qdhib
odu.edue2ma-verification=09ngb
odu.edue2ma-verification=2i0fb
odu.edue2ma-verification=3nlib
odu.edue2ma-verification=8kjib
odu.edue2ma-verification=islib
odu.edue2ma-verification=2nlib
odu.edulogmein-verification-code=9QSbCL6h1oTuUk274zckv7i94
odu.edugoogle-site-verification=iiYAxJiAd-QSQ1qrpeJEpBCtb4o76-Ph3gS3TTAcGeg
odu.edue2ma-verification=9llib
odu.edue2ma-verification=7gnib
odu.edue2ma-verification=twiib
odu.edue2ma-verification=wlsgb
odu.edugoogle-site-verification=UtNBUiLNaVn2WzUGgkMOanCi4pmGGRsn05ANkwLXuwY
odu.edue2ma-verification=pfjib
odu.edue2ma-verification=uxchb
odu.edue2ma-verification=aftgb
odu.edue2ma-verification=6ftgb
odu.edue2ma-verification=dnugb
odu.educanva-site-verification=NjR8khqdW8mmI5KkmPmsmA
odu.eduwebexdomainverification.4C675B8A85D9B136E053AB06FC0A3F65=d3001889-8a6f-4d99-a1e6-6cc71f79eb10
odu.edue2ma-verification=pnhib
odu.edue2ma-verification=ejlib
odu.edue2ma-verification=ldtgb
odu.edue2ma-verification=4vbgb
odu.edue2ma-verification=0atgb
odu.edue2ma-verification=kdtgb
odu.edugoogle-site-verification=jpDI6dx5_fuSbDRGAfspvqUj2x1iZKRZU616IBKFkaU
odu.eduMS=ms35853436
odu.edue2ma-verification=8llib
odu.edue2ma-verification=owtgb
odu.edue2ma-verification=3iugb
odu.edugoogle-site-verification:AdzUG5sAM7FqISVMMBCxT39hZ8dr0VhFtXcAB4mjMvE
odu.edue2ma-verification=wrnib
odu.edugoogle-site-verification=n7kD7hxZdA4lG7GHb2qDCBPIyJhM64VBJZWsWBKX9xY
odu.edue2ma-verification=oiugb
odu.edue2ma-verification=z4dhb
odu.edue2ma-verification=lxiib
odu.edue2ma-verification=xlsgb
odu.edue2ma-verification=hlchb
odu.edu4599c6939841ce209969362ff528f744401670ac3890a10a8bcf4afb7d4f9803
odu.edue2ma-verification=3atgb
odu.eduapple-domain-verification=zs38k2WtaSNjQlAl
odu.edue2ma-verification=odhib
odu.edue2ma-verification=onhib
_dmarc.odu.eduv=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
google._domainkey.odu.eduv=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAy0fS8Xm9oTRlq7bzw0o4pnHXT4blKyRDeArOySq6888m3g9TbcaJcBVfO8SaHImP54v85MG3+SbOwcUpD4eHZZStbv+f/2gX1ou3OMRyzhWgG/e1aVpn1LrxdsOdObOdfDCB+QE/b90Kc0qAwHj5GI49w5jFK/Q1puQ7TRzK0mSEcO1Lcc0j264iM6EBftaINcNZeMcmPtNjtEg83kWfM66IzLq3MZZ5tPgZ+a9YtILLCs5cqkV+SjO9+3/Zvhbu8yYn8aBziky+6v02JcDxHX+svzHpwLMi5TS68o7ggWr5hpDb+KZbk3zAttEEvFN4Ts5a1j2h7enWyWLdJI3c4wIDAQAB
selector2._domainkey.odu.eduv=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwOFdrNcU5eIoKR8LPDbaymAOqEUzooxGK9bn8zFMp3t5nhOo0PvZaJ+iTdaZxOmwoVvh48YaqECAXDNgYqEhpF5dwd8isCflB6sYvYHYlo55GpLV4DnXuNFNK1AIwoKVXgnTmTGd2RKMMYgG9INzDZx2TsTirdluySoB9oPRCTpYj8A6Een41WzTXhlJOsnX3SjvG5Too3v5NhuVlq1O/i1rS5g3hMO+rLmk+S9QIGAplgEnd1zY/sEoYoQnOxYsj6iemZZkPqYOcT9EMd/qfB20/DQGl3/X0EKbx2t7gDjKz5ICKFoJo/C64/B7X/CA2XhK606MmnteGjWO3Sg5wQIDAQAB;
s1._domainkey.odu.eduk=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvInY4Cmt6aLApshQa0H/E7kU3IH2A5S/qUWWnCL/t1A1wz0Ool1xN+hxbgqDUZSk3w+CnSy8CaPsRoPfYDcldou+VANpnA7roeSDJd5XvuAhVsWR4H1/yka+Yv0ExTNX4PCaW2rKelskVCbr9T7Oin914g+v/k9mmZXHA+6qIVbS17oRSC0czW/EkpCQORJkiZ0o1PM3BWC3b1DI7RIYpHl9eFnY+nwNqCUBV1WfAwC/f+atIrk6lh8sHu/9PPmAB+mJYPvh5iuXrMrZKqwp7diOg95c57QZGO5OTiS7kl6IernaUErqsqpp7nbe1IBSGQJ8E4+GwdUISEoDArve3wIDAQAB
s2._domainkey.odu.eduk=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvJFcHVClYOwZu9u/j3MgNxPPL2Qw7lWS3WPFkhSq5mveHOTAtWa4KAfp/SllGlt1C8DBJIBftkExIskxyOt1nCiWGF8jmFxNrZfmRLdYNuxDZ5T0LEbsen7JAfVczt1StJ1FEDfxVeVGATSJNi9SvDVluCfbmD2JIuCmux+HSslUSPzr3b5Q8u01HogsSLm22+7z1Q2b1NxRHdRbGxwmSzIYMNiuayki3F9p1YYb/VaEavN0nOuzHaqsiHI7LtkT1HXYbSOxzv72itieId/N8lGkXfkR/gNyBkoIu6rIvx7QKj0ioW1VlOk8SvbMVp1we5Akv1/u4MmnHdlKWCKRjQIDAQAB

Related IP addresses

IPv4 addresses used by odu.edu: website, name servers, mail servers and senders authorized by SPF.

IP addressUsed for/24 block
23.185.0.1Website23.185.0.0/24
18.211.192.111Name server ns12.odu.edu18.211.192.0/24
184.73.26.141Name server ns11.odu.edu184.73.26.0/24
128.82.95.14Name server ns2.odu.edu128.82.95.0/24
128.82.95.13Name server ns1.odu.edu128.82.95.0/24
40.93.192.4Mail server odu-edu.mail.protection.outlook.com40.93.192.0/24
128.82.55.16Authorized by SPF128.82.55.0/24
34.205.61.72Authorized by SPF34.205.61.0/24
54.88.200.251Authorized by SPF54.88.200.0/24

WHOIS of the domain odu.edu

This Registry database contains ONLY .EDU domains.
The data in the EDUCAUSE Whois database is provided
by EDUCAUSE for information purposes in order to
assist in the process of obtaining information about
or related to .edu domain registration records.

The EDUCAUSE Whois database is authoritative for the
.EDU domain.

A Web interface for the .EDU EDUCAUSE Whois Server is
available at: http://whois.educause.edu

By submitting a Whois query, you agree that this information
will not be used to allow, enable, or otherwise support
the transmission of unsolicited commercial advertising or
solicitations via e-mail.  The use of electronic processes to
harvest information from this server is generally prohibited
except as reasonably necessary to register or modify .edu
domain names.

-------------------------------------------------------------

Domain Name: ODU.EDU

Registrant:
	Old Dominion University
	4700 Elkhorn Avenue
	4th floor, Rm4300 E&CS Bldg.
	Norfolk, VA 23529-0227
	USA

Administrative Contact:
	Bob McCoy
	Old Dominion University
	4700 Elkhorn Avenue
	4th Floor, Rm.4300 E&CS Bldg.
	Norfolk, VA 23529-0227
	USA
	+1.7576835113
	[email protected]

Technical Contact:
	Scott Daffron
	Old Dominion University
	4700 Elkhorn Avenue
	4th floor, rm4300 E&CS Bldg
	Norfolk, VA 23529-0227
	USA
	+1.7576835113
	[email protected]

Name Servers:
	NS2.ODU.EDU
	NS12.ODU.EDU
	NS1.ODU.EDU
	NS11.ODU.EDU

Domain record activated:    05-Nov-1986
Domain record last updated: 01-Sep-2026
Domain expires:             31-Jul-2027

% Query time: 408 msec
% WHEN: Thu Oct 01 19:15:51 UTC 2026