ASB may be the first major bank to re-open a branch near Christchurch city centre following Tuesday's earthquake.All ANZ branches in the affected areas are closed, while Westpac has indicated three of its branches are open. None of Bank of New Zealand's branches in Christchurch were open yesterday.Every bank has a few of its ATMs operational.The Reserve Bank of New Zealand said no problems had been reported with the national payments and settlement systems the central bank operates.Meanwhile, Paymark said it had resolved the issues in its communication networks affecting Eftpos services around the country. But it said operations in Christchurch will depend on power availability and the state of equipment.As more information concerning the scale of damage to property emerged, on the day two of the earthquake, some analysts have already started putting a number on the  expected losses.  Insured losses from the disaster could be US$12 billion, reported some news wire services, citing a report from JP Morgan.Australian insurance companies will bear some costs related to claims from the quake, but the bigger chunk of the costs will have to be borne by the big reinsurers. According to Bloomberg, this will be the costliest natural disaster for insurers since the 2008 hurricane in the US. Amidst all this, Moody's came up with a statement saying it currently sees no reason to reconsider its Aaa rating on the New Zealand government. According to Moody's, even with the increase in debt, the metrics will still be compatible with a Aaa rating. A full assessment on the long term effects on government finance will be made later, following the budget in May.