EXHIBIT 31.2CERTIFICATIONS

I, Eric J. Sandman, certify that:

| | 1. | I have reviewed this Quarterly Report on Form 10-Q of NEON Communications Group, Inc. for the fiscal periods ending March 31, 2007;                                                                                                                                                                                                   
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| | 2. | Based on my knowledge, this Quarterly Report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances
under which such statements were made, not misleading with respect to the periods covered by this Quarterly Report;       
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| | 3. | Based on my knowledge, the financial statements, and other financial information included in this Quarterly Report, fairly present in all material respects the financial condition, results of operations
and cash flows of the registrant as of, and for, the periods presented in this Quarterly Report;                           
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| | 4. | The registrants other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and
internal control over financial reporting (as defined in Exchange Act Rues 13a-15(f) and 15d-15(f)) for the registrant and have:
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| | 5. | The registrants other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrants auditors and the audit
committee of the registrants board of directors (or persons performing the equivalent functions):                                    
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|                  |  | NEON Communications Group, Inc.
|----------------- |  | -------------------------------
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|Date: May 9, 2007 |  |                                
|                  |  | /s/ Eric J. Sandman            
|                  |  | Eric J. Sandman                
|                  |  | Principal Financial Officer    

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