Ontario One Call became Ontario Dig Authority on October 1, 2026. What changed for excavators, and what stayed the same.
Manish builds Dig Window, locate ticket software that runs on Ontario One Call tickets every working day. This guide is written from that work, and updated as Ontario Dig Authority publishes details.
Short version: on October 1, 2026, Ontario One Call rebranded as Ontario Dig Authority. Notification emails moved from @On1Call.com to @OntarioDigAuthority.ca. Everything that governs your dig (the locate request process, validity periods, the five-business-day standard, your legal obligations) stays exactly as it was. The one thing to check now is that email from the new domain reaches the people and systems that need it.
What changed on October 1, 2026
| Item | Before | From October 1, 2026 |
|---|---|---|
| Name | Ontario One Call (ON1Call) | New Ontario Dig Authority |
| Notification email domain | @On1Call.com | New @OntarioDigAuthority.ca |
| Web portal address | portal.ontarioonecall.ca | New portal.ontariodigauthority.ca. Same portal, same login; the old address keeps working during the transition |
| Logo and branded material | Ontario One Call brand | New Ontario Dig Authority brand; partners have until dig season 2027 to swap assets |
| Locate request process | Submit, wait for responses, dig | Same |
| Validity period (60-day floor), relocate timing | Per the One Call Act and rules | Same |
| Your obligations as an excavator | Per the One Call Act and rules | Same |
| "Click Before You Dig — It's the Law" | Campaign | Same. The campaign continues |
Ontario One Call's own wording: existing services, processes, compliance requirements and stakeholder responsibilities remain unchanged. This is a brand change, not a rule change.
Why the name changed
Ontario One Call has been the province's notification centre since 2012 under the Ontario Underground Infrastructure Notification System Act. "One Call" described a phone service; almost every request is now submitted online, and the organization's mandate has grown to include compliance and damage prevention. "Ontario Dig Authority" describes what the organization is today. The rebrand launched October 1, 2026, with an asset-transition period through March 2027.
Your checklist
Every locate notification (confirmations, ticket updates, alerts, service notices) now arrives from the new domain. If your company routes One Call email anywhere automatically, that routing needs to know about the new sender.
- Safelist ontariodigauthority.ca in your email security and spam filtering. In Microsoft 365 that is the Tenant Allow/Block List, or the allowed senders on your anti-spam policy; in Google Workspace it is the approved sender list under Gmail's spam settings in the Admin console. Ontario One Call's safelist notice also lists the new sending mail-server address for IT teams that filter by IP.
- Search every inbox rule, mail-flow rule and forwarding rule for "On1Call" or "onecall". Anything that matches on the old sender should match on both domains, not be replaced, because notifications for tickets already in flight may still reference the old name.
- Check shared mailboxes and distribution lists that locate coordinators, estimators or field supervisors rely on.
- Update bookmarks and shortcuts to the portal. The portal now answers at portal.ontariodigauthority.ca; your existing username and password work there. The old address still works for now.
- Check your locate tracking software or ticketing integration. If it identifies One Call email by sender address, confirm it recognizes the new domain and that recent notifications are still arriving where you expect them.
- Check archiving and retention policies so the new domain is kept for as long as your locate records need to be.
- Tell your crews the name has changed so nobody discards a notice from an unfamiliar sender.
The other change this autumn
The rebrand is often confused with a second change a month later. On November 1, 2026, a new regulation lets the excavator who requested a locate continue digging after a locate's validity period expires, without a relocate, when strict conditions are met. That is a rule change, and it is covered separately: Continuation to dig after a locate expires: the November 1, 2026 rule explained.
Frequently asked questions
Did Ontario One Call change its name?
Yes. On October 1, 2026 Ontario One Call became Ontario Dig Authority. It is a brand change only: the organization, its mandate and its services continue unchanged.
What is Ontario Dig Authority?
Ontario Dig Authority is the new name, from October 1, 2026, of Ontario One Call, the province's locate-request notification centre under the Ontario Underground Infrastructure Notification System Act, 2012. Excavators still submit locate requests to it before digging, and it still notifies underground infrastructure owners.
Where do I log in to Ontario One Call now?
The portal is now at portal.ontariodigauthority.ca, and your existing Ontario One Call username and password work there. It is the same portal under the new name, and the old portal.ontarioonecall.ca address still works for now. Update your bookmarks to the new address.
Do I need a new account or login after October 1, 2026?
No new account has been announced. Ontario One Call has said existing services, processes, compliance requirements and stakeholder responsibilities remain unchanged; only the brand, the email domain and the portal address change. Your existing login works at portal.ontariodigauthority.ca; it is the same portal under a new name.
Will my existing locate requests still be valid after the rebrand?
Yes. The rebrand changes the name on the notices, not the locates. Validity periods, relocate timing and the 60-day validity floor are unaffected.
What email address will Ontario Dig Authority send locate notifications from?
From the @OntarioDigAuthority.ca domain, replacing @On1Call.com. Safelist the new domain and make sure any inbox or forwarding rules that mention On1Call.com also recognize OntarioDigAuthority.ca.
Is the continuation-to-dig regulation part of the rebrand?
No. They are separate. The rebrand is October 1, 2026. The regulation allowing excavators to continue digging after a locate's validity period expires, under strict conditions, takes effect November 1, 2026. Read the continuation guide.
Should I remove "Ontario One Call" from my forwarding rules and templates?
Not yet. Add the new name and domain alongside the old ones. Notices about tickets already open, and partner materials, will keep using the old name well into 2027.
How Dig Window handles the switch
Dig Window recognizes locate email from both On1Call.com and OntarioDigAuthority.ca as the same source, so confirmations and utility responses keep landing on your tracker and your crews' map without anyone touching a forwarding rule. Our browser extension works on both portal addresses, portal.ontariodigauthority.ca and portal.ontarioonecall.ca, and our parsers were re-tested against the portal for the rebrand.
See how Dig Window worksSources: Ontario One Call, "Ontario One Call Rebrand: Stakeholder Information Session" and "Update Email Safelists for Ontario Dig Authority Communications" (ontarioonecall.ca), September 2026; the Rebrand Resource Centre and its Rebrand Transition FAQ Guide. The Ontario Dig Authority logo is reproduced from the brand assets Ontario One Call published for stakeholders and remains its property. Governing law: the Ontario Underground Infrastructure Notification System Act, 2012. This page is a plain-language summary for contractors, not legal advice; the Act, its regulations and Ontario One Call's published rules govern. We update this page as Ontario One Call publishes details. The date at the top is the last revision.