Air carrier captain reported a possible taxi deviation.

Attributes
ACN	1701841
Time
Date	201911
Local Time Of Day	1801-2400
Place
Locale Reference	IAH.Airport
State Reference	TX
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Ground Incursion Taxiway

Narrative:

On taxi out; ramp told us to do a 180 and go to spot X. After the turn; ramp told us to follow aircraft Y to 15L and monitor metering. So we did until aircraft Y continued past 15L. So we stopped and contacted metering; who switched us to ground who gave us further taxi instructions and a phone number to call after landing. Upon completion of the flight I called the number and the controller said they have been having repeated events of flights taxing out without clearance and asked us what happened. I repeated the above. He thanked me and advised that there were no conflicts.

Original NASA ASRS Text

Title: Air carrier Captain reported a possible taxi deviation.

Narrative: On taxi out; Ramp told us to do a 180 and go to Spot X. After the turn; Ramp told us to follow Aircraft Y to 15L and monitor Metering. So we did until Aircraft Y continued past 15L. So we stopped and contacted Metering; who switched us to Ground who gave us further taxi instructions and a phone number to call after landing. Upon completion of the flight I called the number and the Controller said they have been having repeated events of flights taxing out without clearance and asked us what happened. I repeated the above. He thanked me and advised that there were no conflicts.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.