Exhibit 99.1

IHS Inc. Reports Fourth Quarter and Full Year 2010 Results

ENGLEWOOD, Colo. (January 6, 2011) – IHS Inc. (NYSE: IHS), a leading global source of critical information and insight, today reported results for the fourth quarter and full year ended November 30, 2010. Revenue for the fourth quarter of 2010 totaled $296 million, a 15 percent increase over fourth quarter 2009 revenue of $257 million. Net income attributable to IHS for the fourth quarter of 2010 was $41.5 million, or $0.64 per diluted share, compared to fourth quarter 2009 net income attributable to IHS of $41.2 million, or $0.64 per diluted share. Revenue for fiscal year 2010 totaled $1.075 billion, up 11 percent over the prior year total of $967 million. Net income attributable to IHS for the full year 2010 was $141 million, or $2.18 per diluted share, compared to full year 2009 net income attributable to IHS of $135 million, or $2.11 per diluted share.

Adjusted EBITDA (Earnings Before Interest, Taxes, Depreciation and Amortization) totaled $90.1 million for the fourth quarter of 2010, up 16 percent from $77.8 million in the fourth quarter of 2009. Adjusted earnings per diluted share were $0.81 for the fourth quarter of 2010, an increase of eight percent over the prior-year period. Adjusted EBITDA for fiscal year 2010 totaled $325 million, up 17 percent from $279 million in 2009. Adjusted earnings per diluted share were $2.96 for fiscal 2010, an increase of 13 percent over the prior-year period. Adjusted EBITDA and adjusted earnings per share are non-GAAP (Generally Accepted Accounting Principles) financial measures used by management to measure operating performance. Please see the end of this release for more information about these non-GAAP measures.

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“It was a record year for us. We earned more Adjusted EBITDA in the fourth quarter of 2010 than we did in all of 2005, just five short years ago,” said Jerre Stead, IHS chairman and chief executive officer. “With strengthening organic growth, continued margin expansion and healthy free cash flow generation, we finished the year on a high note and enter 2011 with strong momentum.”

Fourth Quarter 2010 Details

Revenue for the fourth quarter of 2010 totaled $296 million, a 15 percent increase over fourth-quarter 2009 revenue of $257 million. The revenue increase was driven by six percent organic growth, 10 percent acquisitive growth, and was offset one percent by foreign currency movements. The subscription-based business grew seven percent organically and represented 76% of total revenue. The company continued to grow its business overall in all three regions. The Americas (North and South America) segment increased its revenue during the fourth quarter by $22.5 million, or 14 percent, to $180 million. The EMEA (Europe, Middle East and Africa) segment grew its fourth quarter revenue by $9.3 million, or 12 percent, to $88.1 million. The APAC (Asia Pacific) segment’s revenue was up $7.3 million, or 36 percent, to $27.6 million.

Adjusted EBITDA for the fourth quarter of 2010 was $90.1 million, up $12.3 million, or 16 percent, over the prior-year period. Operating income increased $2.0 million, or four percent, to $55.6 million. Americas’ operating income increased $4.0 million, or eight percent, to $55.5 million. EMEA’s operating income was up $2.6 million, or 13 percent, to $21.9 million. APAC’s operating income grew $1.9 million, or 28 percent, to $8.8 million.

Full Year 2010

Revenue for the year ended November 30, 2010, totaled $1.075 billion, an 11 percent increase over 2009 revenue of $967 million. Revenue growth was comprised of five percent organic, five percent acquisitive, and one percent from foreign currency movements. The subscription-based portion of the business grew six percent organically and represented 78 percent of total revenue. The company continued to grow its business overall in all three regions. The Americas segment increased its revenue year over year by $68.2 million, or 11 percent, to $671 million. The EMEA segment grew its annual revenue by $24.1 million, or eight percent, to $312 million. The APAC segment’s revenue was up $15.9 million, or 21 percent, to $92.7 million.

Adjusted EBITDA for fiscal 2010 was $325 million, up $46.2 million, or 17 percent, over the prior year. Operating income increased $6.9 million, or four percent, to $187 million. Americas’ operating income increased $11.7 million, or 6 percent, to $203 million. EMEA’s operating income was up $9.1 million, or 15 percent, to $69.7 million. APAC’s operating income grew $4.9 million, or 20 percent, to $29.6 million.

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Net income attributable to IHS for the year ended November 30, 2010, increased $6.4 million, or five percent, to $141 million, or $2.18 per diluted share.

Cash Flows

IHS generated $266 million of cash flow from operations during the year ended November 30, 2010, representing a 13 percent increase over last year’s $235 million.

Balance Sheet

IHS ended fourth quarter 2010 with $201 million of cash and cash equivalents and $294 million of debt.

New, Expanded $1 Billion Unsecured Credit Facility

On January 5, 2011, IHS completed a $1 billion syndicated bank credit facility consisting of a $300 million term loan and a $700 million revolver. Both loans are unsecured with a five-year tenor expiring in January 2016. The interest rates for borrowing under both loans range from the applicable LIBOR plus 1.25% to 2.00%, depending upon our leverage, which is capped at three times under this agreement.

“We elected to implement a new credit facility since there were less than two years remaining on our prior credit facility, and as market conditions had improved substantially,” stated Michael J. Sullivan, IHS executive vice president and chief financial officer. “In completing the new $1 billion credit facility, we added capacity to fund acquisitions.”

Outlook (forward-looking statement)

For the year ending November 30, 2011, IHS expects:

Additionally, for the year ending November 30, 2011, we also expect:

The above outlook assumes constant currencies and no further acquisitions, restructurings or unanticipated events.

See discussion of adjusted EBITDA and non-GAAP financial measures at the end of this release.

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As previously announced, IHS will hold a conference call to discuss fourth quarter and full year 2010 results on January 6, 2011, at 3:00 p.m. MDT (5:00 p.m. EDT). The conference call will be simultaneously webcast on the company’s website: www.ihs.com.

Use of Non-GAAP Financial Measures

Non-GAAP results are presented only as a supplement to the financial statements based on U.S. generally accepted accounting principles (GAAP). The non-GAAP financial information is provided to enhance the reader’s understanding of our financial performance, but no non-GAAP measure should be considered in isolation or as a substitute for financial measures calculated in accordance with GAAP. Reconciliations of the most directly comparable GAAP measures to non-GAAP measures, such as adjusted EBITDA and adjusted earnings per diluted share, are provided within the schedules attached to this release.

EBITDA is defined as net income plus or minus net interest plus income taxes, depreciation and amortization. Adjusted EBITDA excludes non-cash items, gains and losses on sales of assets, restructuring charges and other items that management does not utilize in assessing our operating performance (as further described in the attached financial schedules). Adjusted earnings per diluted share exclude similar non-cash items as adjusted EBITDA. None of these non-GAAP financial measures are recognized terms under GAAP and do not purport to be an alternative to net income as an indicator of operating performance or any other GAAP measure.

Management uses these non-GAAP measures in its operational and financial decision-making, believing that it is useful to eliminate certain items in order to focus on what it deems to be a more reliable indicator of ongoing operating performance and our ability to generate cash flow from operations. As a result, internal management reports used during monthly operating reviews feature the adjusted EBITDA and adjusted earnings per diluted share metrics. Management also believes that investors may find non-GAAP financial measures useful for the same reasons, although investors are cautioned that non-GAAP financial measures are not a substitute for GAAP disclosures. EBITDA, adjusted EBITDA, and adjusted earnings per diluted share are also used by research analysts, investment bankers and lenders to assess our operating performance. For example, a measure similar to EBITDA is required by the lenders under our credit facility.

Because not all companies use identical calculations, our presentation of non-GAAP financial measures may not be comparable to other similarly-titled measures of other companies. However, these measures can still be useful in evaluating our performance against our peer companies because management believes the measures provide users with valuable insight into key components of GAAP financial disclosures. For example, a company with greater GAAP net income may not be as appealing to investors if its net income is more heavily comprised of gains on asset sales. Likewise, eliminating the effects of interest income and expense moderates the impact of a company’s capital structure on its performance.

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All of the items included in the reconciliation from net income to adjusted EBITDA are either (i) non-cash items (e.g., depreciation and amortization and stock-based compensation expense) or (ii) items that management does not consider to be useful in assessing our operating performance (e.g., income taxes, restructurings and gain on sale of assets). In the case of the non-cash items, management believes that investors can better assess our operating performance if the measures are presented without such items because, unlike cash expenses, these adjustments do not affect our ability to generate free cash flow or invest in our business. For example, by eliminating depreciation and amortization from EBITDA, users can compare operating performance without regard to different accounting determinations such as useful life. In the case of the other items, management believes that investors can better assess operating performance if the measures are presented without these items because their financial impact does not reflect ongoing operating performance.

IHS Forward-Looking Statements:

This release may contain forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that are not historical facts. Such statements may include financial projections and estimates and their underlying assumptions, statements regarding plans, objectives and expectations with respect to future operations, products and services, and statements regarding future performance. Forward-looking statements are generally identified by the words “expect,” “anticipate,” “believe,” “intend,” “estimate,” “plan” and similar expressions. Although IHS and its management believe that the expectations reflected in such forward-looking statements are reasonable, investors are cautioned that forward-looking information and statements are subject to various risks and uncertainties—many of which are difficult to predict and generally beyond the control of IHS—that could cause actual results and developments to differ materially from those expressed in, or implied or projected by, the forward-looking information and statements. These risks and uncertainties include those discussed or identified by IHS from time to time in its public filings. Other than as required by applicable law, IHS does not undertake any obligation to update or revise any forward-looking information or statements. Please consult our public filings at www.sec.gov or www.ihs.com.

About IHS Inc. (www.ihs.com)

IHS (NYSE: IHS) is a leading source of information and insight in pivotal areas that shape today’s business landscape: energy, economics, geopolitical risk, sustainability and supply chain management. Businesses and governments around the globe rely on the comprehensive content, expert independent analysis and flexible delivery methods of IHS to make high-impact decisions and develop strategies with speed and confidence. IHS has been in business since 1959 and became a publicly traded company on the New York Stock Exchange in 2005. Headquartered in Englewood, Colorado, USA, IHS employs more than 4,400 people in more than 30 countries around the world.

IHS is a registered trademark of IHS Inc. All other company and product names may be trademarks of their respective owners. Copyright © 2011 IHS Inc. All rights reserved.

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IHS INC.

CONSOLIDATED BALANCE SHEETS

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CONSOLIDATED STATEMENTS OF OPERATIONS

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IHS INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

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SUPPLEMENTAL REVENUE DISCLOSURE

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RECONCILIATIONS OF NON-GAAP FINANCIAL MEASUREMENTS TO

MOST DIRECTLY COMPARABLE GAAP FINANCIAL MEASUREMENTS

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IHS INC.

RECONCILIATIONS OF NON-GAAP FINANCIAL MEASUREMENTS TO

MOST DIRECTLY COMPARABLE GAAP FINANCIAL MEASUREMENTS

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IHS INC.

RECONCILIATIONS OF NON-GAAP FINANCIAL MEASUREMENTS TO

MOST DIRECTLY COMPARABLE GAAP FINANCIAL MEASUREMENTS

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IHS INC.

SUPPLEMENTAL INFORMATION

(In thousands, except per-share amounts)