1. OUR MISSION:Integra Telecom will lead the telecommunications industry in providing quality, user-friendly service.

2. COMPANY OVERVIEW

4. Local management

7. Unique 4,700-mile, long haul network – one of largest in U.S.

8. 194 Communities Served

9. Over 900 Lit Buildings

10. 33 Voice Switches

11. 11-State Service Territory

12. Over 130,000 Customers2

13. Integra at a Glance Network Map Largest Alternative Telecom Provider in West 3

14. Timeline 8

15. MARKET OVERVIEW

17. Service sensitive and value our differentiated strategy10

18. Market Profile Highly Differentiated Service Model +Product range (eliminate multiple vendor confusion) + Local presence (local number, answered by real person) + On-net service (ability to add value and control product quality) + Regional networks (offensive & defensive advantages) =Quality, user-friendly customer experience 11

20. Local network, network operations and management of all employees that “touch” the customer

21. Profit and loss managementAll OMA personnel are under one roof in the markets – next to the customer 15

22. Customers Integra’s Target Markets Employ an average of 85% of a State’s Workforce 12

24. Long Distance

25. Fax Lines

26. DSL

27. Calling Card

28. Call Management/Call Routing

29. Conference Calling

30. Dedicated Internet

31. Domain Services

32. Email

33. Equipment Maintenance Plans

34. IP Addressing

35. Interactive Voice Response

36. LAN/WAN Hardware

37. Local/National Dial-up Internet

38. Managed Firewalls

39. Network Configuration

40. Network/System Monitoring

41. Point to Point private lines

42. Premise Wiring

43. Presence Management Integration

44. Soft Phones

45. Simple Solutions Bundle

46. SMTP Mail Relay

47. Telephone Systems

48. Toll Free

49. Unified Messaging

50. Video Conferencing

51. Voice Messaging

52. VPNs

53. Web Hosting

54. Web Conferencing

55. Wireless Networking

56. VoIP Telephone SystemsQuantity 13

58. Seattle

59. Minneapolis

60. Salt Lake City

61. Sacramento

62. Boise

63. Phoenix14

64. Importance Ranking of Purchase Criteria Price is important, but four other service-related criteria rank higher. Importance Rating of Seven Purchase Criteria In Choosing a Telecom Provider (10-Point scale, 10 being extremely important.) Customers Are Demanding Service From Their Carriers The graph above depicts a statistical y valid rating by customers of Integra versus customers of its primary competitors on the importance of each purchase criteria. The results are ranked – left to right – by importance rating from non-Integra customers. These results were based on a statistically valid sample of the SME market in Integra’s geographic service area (based on zip codes that overlap Integra’s network) within the seven largest MSAs Integra serves. The results reflect the mean rating for each company. 2009 Riley Research Associates.

65. Integra Dominates in Satisfaction by Purchase Criteria Integra is the Only Telecom Provider to Exceed the Industry Average Every Category Customer Satisfaction by Purchase Criteria (10-Point Scale, 10 being the highest) Above is a graph that depicts the statistical rating by customers of each company with regard to service quality by purchase criteria, highlighting Integra versus its primary competitors. The results are listed – left to right – by the importance rating from non-Integra customers. These results were based on a statistically valid sample of the SME market in Integra’s geographic service area (based on zip codes that overlap Integra’s network) within the seven largest MSAs Integra serves. The results reflect the mean rating for each company. 2009 Riley Research Associates.

66. Integra Rates #1 in Overall Customer Satisfaction Overall Customer Satisfaction Among Major Telecom Providers in Integra’s Seven Largest Markets (10-Point Scale, 10 being the highest) The graph above depicts a statistical y valid rating by customers of each company with regard to overall service quality, highlighting Integra versus its primary competitors. These results were based on a statistically valid sample of the SME market in Integra’s geographic service area (based on zip codes that overlap Integra’s network) within the seven largest MSAs Integra serves. The results reflect the mean rating for each company. 2009 Riley Research Associates.

67. Revenue and Profitability ($ in millions) TTM Q309 Revenue TTM Q309 EBITDA TTM Q309 FCF (a) Margin 33.5% 32.2% 14.7% 11.0% 9.8% 17.0% 11.2% 7.3% (2.7%) (5.9%) Note: Integra and all public companies are TTM as of 09 2009. (a) Defined as EBITDA less capex. Excluding transition capital. Source: Company filings, Company websites, Wall Street estimates, and Integra management projections

68. Survey Results “In nearly 20 years of satisfaction assessment across a wide variety of industries, Integra’s scores are among the highest. We rarely see the number of ‘10’s’ that we saw in the recent survey.” ~ Michael J. RileyResearch Director, Riley Research Associates 20