Good day, everyone. Welcome to VeriSign's first quarter 2019 earnings call. Today's conference is being recorded. Unauthorized recording of this call is not permitted. At this time, I'd like to turn the conference over to Mr. David Atchley, Vice President of Investor Relations and Corporate Treasurer. Please go ahead, sir.
Thank you, operator, good afternoon, everyone. Welcome to VeriSign's first quarter 2019 earnings call. With me are Jim Bidzos, Executive Chairman, President, and CEO, Todd Strubbe, Executive Vice President and COO, and George Kilguss, Executive Vice President and CFO. This call and our presentation are being webcast from our investor relations website, which is available under About VeriSign on verisign.com. There you will also find our first quarter 2019 earnings release. At the end of this call, the presentation will be available on that site, and within a few hours, the replay of the call will be posted.
Financial results in our earnings release are unaudited, and our remarks include forward-looking statements that are subject to the risks and uncertainties that we discuss in detail in our documents filed with the SEC, specifically the most recent reports on forms 10-K and 10-Q, which identify risk factors that could cause actual results to differ materially from those contained in the forward-looking statements. VeriSign retains its long-standing policy not to comment on financial performance or guidance during the quarter unless it is done through a public disclosure. The financial results in today's call and the matters we will be discussing today include GAAP and non-GAAP measures used by VeriSign. GAAP to non-GAAP reconciliation information is appended to our earnings release and slide presentation as applicable, each of which can be found on the investor relations section of our website.
In a moment, Jim and George will provide some prepared remarks. Afterward, we will open the call for your questions. With that, I would like to turn the call over to Jim.
Thanks, David. Good afternoon, everyone. I'm pleased to report another solid quarter for VeriSign. First quarter results were in line with our objectives of offering security and stability to our customers while generating profitable growth and providing long-term value to our shareholders. At the end of March, the domain name base in .com and .net totaled 154.8 million, consisting of 141 million names for .com and 13.8 million names for .net, with a year-over-year growth rate of 4.4%. During the first quarter, we processed 9.8 million new registrations, and the domain name base increased by 1.82 million names.
Although renewal rates are not fully measurable until 45 days after the end of the quarter, we believe that the renewal rate for the first quarter of 2019 will be approximately 75%. This preliminary rate compares to 75.3% achieved in the first quarter of 2018. For 2019 full year, we now expect the domain name base growth rate to be between 2.5% and 4.25%. Last quarter, we said that we began the process with ICANN to incorporate features of Amendment 35 to the cooperative agreement, including the pricing terms into the .com registry agreement. There are no updates to share at this time, but we continue to be engaged in this process that may take some number of months to complete.
Just to remind those not familiar with this process, under the 2016 Amendment that extended the term of the .com registry agreement, we also agreed to negotiate in good faith to flow through changes made in the cooperative agreement, including the pricing terms, and to preserve and enhance the security and stability of .com or the Internet. We are negotiating these items now. We'll update you as appropriate. During the first quarter, we continued our share repurchase program by repurchasing 1 million shares of common stock for $175 million. Our financial position remains strong with $1.25 billion in cash equivalents, and marketable securities at the end of the quarter. We continually evaluate the overall cash and investing needs of the business and consider the best uses for our cash, including potential share repurchases.
Now I'd like to turn the call over to George.
Thanks, Jim, and good afternoon, everyone. First quarter GAAP results produced revenue of $306 million, up 2.4% year-over-year. Operating expense totaled $106 million compared to $114 million last quarter and $113 million in the first quarter a year ago. Fees in the quarter were lower sequentially, primarily due to the elimination of approximately $3 million of costs associated with our security services sale last quarter and the seasonal timing of marketing program spend. Operating income totaled $200 million compared with $185 million in the first quarter of 2018. The operating margin in the quarter came to 65.4% compared to 62% in the same quarter a year ago.
Net income totaled $163 million compared to $134 million a year earlier, which produced diluted earnings per share of $1.45 in the quarter this year compared to $1.09 for the same quarter last year. As of March 31st, 2019, the company maintained total assets of $1.9 billion and total liabilities of $3.3 billion. Assets included $1.25 billion of cash equivalents, and marketable securities, of which $685 million were held domestically, with the remainder held abroad. During the quarter, we repatriated $249 million from our international entities, net of withholding taxes. I'll now review some additional first quarter financial metrics, which include non-GAAP operating margin, non-GAAP earnings per share, operating cash flow, and free cash flow.
I will provide updates to our 2019 full year guidance. As it relates to non-GAAP metrics, first quarter non-GAAP operating expense, which excludes 12 million of stock-based compensation, totaled $94 million compared to $102 million last quarter and $101 million in the first quarter a year ago. Operating margin for the first quarter was 69.4% compared to 66.7% last quarter and 66.3% in the same quarter of 2018. Non-GAAP net income for the first quarter was $158 million, resulting in non-GAAP diluted earnings per share of $1.31 based on a weighted average diluted share count of 120.3 million shares.
This compares to $1.58 last quarter and $1.07 in the first quarter of 2018. Last quarter's non-GAAP diluted earnings per share included a $0.36 benefit due to the gain related to the sale of our security services customer contracts. Operating cash flow for the first quarter was $187 million, and free cash flow was $178 million compared to with $90 million and $82 million, respectively, for the first quarter last year. Last year's first quarter 2018 cash flow included higher cash taxes related to international withholding taxes associated with last year's repatriation activities, as well as higher cash interest related to our convertible debentures before they were retired. Now I'd like to provide updates to our full year 2019 guidance.
Revenue is now expected to be in the range of $1.22 billion-$1.235 billion, narrowed from the $1.215 billion-$1.235 billion range provided on our last call. Our 2019 revenue range is based on our expectation for continued growth of our domain name base for the full year of 2019 of between 2.5% and 4.25%, being partially offset by the loss of revenue associated with the sale of our security services customer contracts. Our non-GAAP operating margin is still expected to be between 67.5%-68.5% and will continue to include certain non-material operating costs associated with providing transition services for the security service customers.
Our interest expense and non-operating income net is still expected to be an expense of between $42 million and $49 million and consists primarily of net interest expense, partially offset by income recognized as part of the aforementioned transition services agreement. Capital expenditures in 2019 are still expected to be between $45 million-$55 million, Cash taxes are now expected to be between $85 million and $105 million, lowered from the $95 million-$115 million range provided on our last call. In summary, the company continued to demonstrate sound financial performance during the first quarter of 2019. I would like to turn the call back to Jim for his closing remarks.
Thanks, George. The first quarter was another solid quarter for VeriSign. There was further expansion of the domain name base and year-over-year revenue growth. We generated and efficiently returned value to shareholders. We continued our work to protect, grow, and manage the business while continuing our focus on providing long-term value to our shareholders. We'll now take your questions. Operator, we're ready for the first question.
Thank you. If you'd like to signal off questions, please press star one on your touchtone telephone. If you are using a speakerphone, please make sure any functions are turned off to allow your signal to reach our equipment. Also, in order to receive the best signal, please refrain from using your headset to ask a question. Once again, please press star one for questions. We'll pause for just a moment. Our first question will come from Sterling Auty with JPMorgan.
Yeah. Thanks. Hi, guys. Wondered if we could start with, I didn't hear an update on, .web. Anything that you can share with us there?
There are no updates from .web at this point. The process continues.
Okay. You mentioned that there was no update yet in terms of the registry agreement. Is there a formal process that you're going through, or is it just a discussion negotiation? Can you at least say whether or not there's active discussions going on?
Well, we are engaged in the process. The process, as we've described it, is under the 2016 Amendment that extended the term of the .com agreement. We've agreed to negotiate in good faith to flow through changes that come from the Cooperative Agreement. That includes the pricing terms and also to preserve and enhance the security and stability of .com and the Internet. We're negotiating those items now, updates when appropriate, but I don't wanna get into any particulars of the negotiation, of course.
Yeah. No, no. I just didn't know if there was particularly publicly available information in terms of, you know, if there's milestones that we should be looking for other than just a full update, here's the new agreement. I just wanted to make sure that we're covering our bases.
Yeah, I understand. We'll have to update you as appropriate.
Okay, sounds good. Two more. Just one, any commentary in terms of, excuse me, the geographic, you know, in terms of the main base and the gross registrations, what did you see geographically, domestic, international, and specifically within international, any color that you can provide in terms of, what you saw out of the various regions?
Yes, Sterling, this is George. I would say consistent with recent quarters, we continue to see both the U.S. market and the Chinese registrars perform quite well. They've been, you know, a lot of the driver for the past couple quarters, and they continue to be good markets for us.
Within that Chinese portion, obviously going back, we had the speculative nature. Do you feel like the names being added today are a healthier growth, meaning that they're being driven by more fundamental reasons that'll make them stickier names?
I can just tell you in the data that I look at from a renewal rate perspective, I haven't seen any change in the normal renewal rates that we historically see from Chinese registrars. Obviously, there's a 45 days lag, but I don't see any deviation, at least year to date in those numbers.
Okay. Last question around the TSA, you know, post the sale of those contracts. How long is that TSA? Within other income, is there a little bit of color in terms of the magnitude of that TSA?
Yeah, sure. It's a 12-month agreement. It expires in December of this year. Having said that, the parties do have the ability to extend that should they desire to do so. We recognized about $4 million of income in the quarter. It's in our other income. It's about $1.3 million a month is the income associated with that contract.
All right. Perfect. Thank you.
Yeah. Sterling, Jim, just, you know, you asked me about .web, and I said that there is no update, but I just feel I should remind everyone that one of the losing bidders in the .web auction, Afilias, one of our competitors, they filed an arbitration against ICANN, as you probably know, trying to continue to delay the process. We're not parties to that arbitration yet, but we are actively seeking to participate in it.
Great. Thank you.
Sure.
Our next question will come from Nick Jones with Citi.
Hi. Thanks for taking my questions. Is there any kind of broader trends in TLDs or country code TLDs that you could call out that maybe is impacting .com demand internationally?
You know, I think that, look, the TLD market is a competitive market. Both .com and .net receive competition from ccTLDs primarily in international markets, new gTLD and legacy TLDs also provide competition. We're, you know, we'll continue to compete effectively with those TLDs. You can see the zone did grow about 4.4% this quarter. New registrations were up about 2.1% year-over-year. You know, we're still competing effectively in the markets that we're in, it is a competitive market out there.
Thanks. Thanks. One follow-up on, I guess the .web arbitration. You know, how long or what would the process look like for VeriSign to join that arbitration and kind of get involved?
Well, I hate to make this sound like a stock line, but it is. I mean, we don't comment on any detailed aspects of any pending litigation. Right now, it's an arbitration between Afilias and ICANN, and we're seeking, as you point out, to participate. Beyond that, I just don't have any update to provide. As soon as we do.
Oh.
We'll let you know.
Okay. Thank you for taking the questions.
We'll take our last question from Rob Oliver with Baird.
Great. Hey, thanks, guys, for taking my question. Jim, sorry, not to go back to .web, I think you guys had indicated on the last call that that process could take a few months. Is that, something that might take longer in your experience now since, you know, it's been a few months now since Afilias had filed that arbitration? Is there just kind of no way for us to know, and there's a process? Just any color would be helpful there. Thanks.
Well, I think it's the latter. I mean, having been involved in a number of arbitrations, you obviously can't predict at what rate the wheels of justice will turn. You know, if they may turn, they are turning. As soon as we have updates, we'll certainly share them.
Great. Thanks. You know, it's come up a bit lately with clients as well as on some of your calls about the idea of kind of vertically integrating on the registrar and registry side. Again, I just wanted to kind of see if I can, you know, pump you guys for your thoughts on that here quickly.
Yeah, nothing specific to say at this point. It's just, there's nothing to add to what we've already said.
Okay. That's it for me. Thank you, guys, very much.
Thank you.
I'll now turn the conference back over to Mr. David Atchley for final comments.
Thank you, operator. Please call the investor relations department with any follow-up questions from this call. Thank you for your participation. This concludes our call. Have a good evening.
Thank you. That does conclude today's conference. We do thank you for your participation. Have a wonderful day.