During the three and six month periods ended June 30, 2019, we recorded $4.1 million and $8.2 million, respectively, of revenue from the High Cost Program in our International Telecom segment. During the three and six months periods ended June 30, 2018, we recorded $4.1 million and $8.2 million, respectively, of revenue from the High Cost Program in our International Telecom segment. Also, during the three and six month periods ended June 30, 2019, we recorded $0.3 million and $0.6 million of High Cost Program revenue in our US Telecom segment. During the three and six months periods ended June 30, 2018, we recorded $0.3 million and $0.6 million, respectively, of revenue from the High Cost Program in our US Telecom segment. In addition, we recorded revenue of $8.2 million during the three and six months ended June 30, 2018, from additional USF funding authorized by the FCC following the Hurricanes.
We received $21.1 million of Phase I Mobility Fund support to our wholesale wireless business (the “Mobility Funds”) to be used to expand voice and broadband networks in certain geographic areas in order to offer either 3G or 4G service. Of these funds, $7.2 million was recorded as an offset to the cost of the property, plant, and equipment associated with these projects and, consequentially, a reduction of future depreciation expense. The remaining $13.9 million received offset operating expenses from inception of the program through part of the third quarter of 2018. The Mobility Funds projects and related operating results are included within our US Telecom segment.
In August 2018, we were awarded $79.9 million over 10 years under the Connect America Fund Phase II Auction, to be used to provide fixed broadband and voice services to certain eligible areas in the United States. We recorded $1.5 million of revenue in the three and six months ended June 30, 2019 from the Connect America Fund Phase II program.
The E-Rate program provides discounted telecommunication access to eligible schools and libraries. The E-Rate program (i) awards special construction funding to build network connectivity for eligible participants, and (ii) pays for discounted recurring charges for eligible broadband services. The special construction funding is used to reimburse construction costs and is distributed upon completion of a project. As of June 30, 2019, we were awarded approximately $15.4 million of E-Rate grants with construction completion obligations between June 2019 and June 2020. Once these projects are constructed we are obligated to provide service to the E-Rate program participants. We are in various stages of constructing the networks and have not received any of the funds.
We also receive funding to provide discounted telecommunication services to eligible customers under the E-Rate, Lifeline, and Rural Health Care Support Programs. During the three and six months ended June 30, 2019, we recorded revenue of $1.6 million, and $3.2 million, respectively, in the aggregate from these programs. During the three and six months ended June 30, 2018, we recorded revenue of $2.1 million, and $4.3 million, respectively, in the aggregate from these programs. We are subject to certain operational and reporting requirements under the above mentioned programs and we believe that we are in compliance with all of these requirements.
Tribal Bidding Credit
As part of the broadcast television spectrum incentive auction, the FCC implemented a tribal lands bidding credit to encourage deployment of wireless services utilizing 600 MHz spectrum on the lands of federally recognized tribes. We received a bidding credit of $7.4 million under this program in 2018. A portion of these funds will be used to offset network capital costs and a portion will be used to offset the costs of supporting the networks. Our current estimate is that it will use $5.4 million to offset capital costs and, consequently, reduce future depreciation expense and $2.0 million to offset the cost of supporting the network which will reduce future operating expense. The credits are subject to certain requirements, including deploying service by January 2021 and meeting minimum coverage metrics. If the requirements are not met the funds may be subject to claw back provisions. We currently expect to comply with all applicable requirements related to these funds.
Impact of Hurricanes
During September 2017, the US Virgin Islands economy, our customer base and our operations were severely impacted by Hurricanes Irma and Maria (collectively, the “Hurricanes”). Both our wireless and wireline networks and commercial operations were severely damaged by these storms and as a result of the significant damage to the wireline network and the lack of consistent commercial power in the territory, we were unable to provide most of our wireline