a quick ruby script to update route53 contacts for all registered domains, since R53 dashboard STILL offers no way to do that

update_all_my_r53_domain_contacts.rb

# assumes gem is installed for current ruby version:
# gem install aws-sdk-route53domains

# assumes you have already setup a named-profile YOUR_PROFILE_NAME for an aws cli credential with sufficient access 
# to your route53 to list and update domain registration records
# an IAM user with AmazonRoute53FullAccess is overkill, dangerous, but easiest

# ======

require 'aws-sdk-route53domains'

local_aws_profile_name = 'YOUR_PROFILE_NAME'

client = Aws::Route53Domains::Client.new(profile: local_aws_profile_name)

domains_obj = client.list_domains(max_items: 100)
domains_list_obj = domains_obj.domains
my_domains = []
domains_list_obj.each do |dobj|
  my_domains << dobj["domain_name"]
end

# only need the fields that changed, full format fields comments are below for reference
# (you could of course have a diff hash for each of the 3 types of contacts)
contact_hash = {address_line_1: "MY NEW ADDRESS 1", address_line_2: "MY NEW ADDRESS 2", city: "MY NEW CITY", zip_code: "MY NEWZIP"} 

op_ids = []
missed = []
dupes = []
other_errors = []
my_domains.each do |this_domain|
  puts
  puts "submitting #{this_domain}..."
  begin

    resp = client.update_domain_contact(
      domain_name: this_domain, 
      admin_contact: contact_hash,
      registrant_contact: contact_hash,
      tech_contact: contact_hash )

    puts "response:  #{resp.inspect}"
    op_ids << {domain: this_domain, op_id: resp["operation_id"]}
  
  rescue StandardError => e

    if e.message.downcase.include?("rate exceeded")
      
      puts "#{this_domain} rate exceeded, run again"
      missed << this_domain
    
    elsif e.message.downcase.include?("request already pending")
      
      puts "#{this_domain}: ignoring error... duplicate"
      dupes << this_domain
    
    else
      
      puts "#{this_domain}: Exception: #{e.message}"
      other_errors << {domain: this_domain, error: e.message }
    
    end
  end
  sleep 5
end

puts "#{dupes.count} dupes already submitted, earlier changes still pending"
puts "#{missed.count} missed (rate exceeded), retry later: #{missed}"
puts "#{other_errors.count} OTHER errors: #{other_errors}"
puts "if you want to check back programatically on status of updates, the ops ids for each domain are in op_ids[]"

# aws SDK's complete contact hash format is:

#   admin_contact: {
#     first_name: "ContactName",
#     last_name: "ContactName",
#     contact_type: "PERSON", # accepts PERSON, COMPANY, ASSOCIATION, PUBLIC_BODY, RESELLER
#     organization_name: "ContactName",
#     address_line_1: "AddressLine",
#     address_line_2: "AddressLine",
#     city: "City",
#     state: "State",
#     country_code: "AC", # accepts AC, AD, AE, AF, AG, AI, AL, AM, AN, AO, AQ, AR, AS, AT, AU, AW, AX, AZ, BA, BB, BD, BE, BF, BG, BH, BI, BJ, BL, BM, BN, BO, BQ, BR, BS, BT, BV, BW, BY, BZ, CA, CC, CD, CF, CG, CH, CI, CK, CL, CM, CN, CO, CR, CU, CV, CW, CX, CY, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, EH, ER, ES, ET, FI, FJ, FK, FM, FO, FR, GA, GB, GD, GE, GF, GG, GH, GI, GL, GM, GN, GP, GQ, GR, GS, GT, GU, GW, GY, HK, HM, HN, HR, HT, HU, ID, IE, IL, IM, IN, IO, IQ, IR, IS, IT, JE, JM, JO, JP, KE, KG, KH, KI, KM, KN, KP, KR, KW, KY, KZ, LA, LB, LC, LI, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MF, MG, MH, MK, ML, MM, MN, MO, MP, MQ, MR, MS, MT, MU, MV, MW, MX, MY, MZ, NA, NC, NE, NF, NG, NI, NL, NO, NP, NR, NU, NZ, OM, PA, PE, PF, PG, PH, PK, PL, PM, PN, PR, PS, PT, PW, PY, QA, RE, RO, RS, RU, RW, SA, SB, SC, SD, SE, SG, SH, SI, SJ, SK, SL, SM, SN, SO, SR, SS, ST, SV, SX, SY, SZ, TC, TD, TF, TG, TH, TJ, TK, TL, TM, TN, TO, TP, TR, TT, TV, TW, TZ, UA, UG, US, UY, UZ, VA, VC, VE, VG, VI, VN, VU, WF, WS, YE, YT, ZA, ZM, ZW
#     zip_code: "ZipCode",
#     phone_number: "ContactNumber",
#     email: "Email",
#     fax: "ContactNumber",
#     extra_params: [
#       {
#         name: "DUNS_NUMBER", # required, accepts DUNS_NUMBER, BRAND_NUMBER, BIRTH_DEPARTMENT, BIRTH_DATE_IN_YYYY_MM_DD, BIRTH_COUNTRY, BIRTH_CITY, DOCUMENT_NUMBER, AU_ID_NUMBER, AU_ID_TYPE, CA_LEGAL_TYPE, CA_BUSINESS_ENTITY_TYPE, CA_LEGAL_REPRESENTATIVE, CA_LEGAL_REPRESENTATIVE_CAPACITY, ES_IDENTIFICATION, ES_IDENTIFICATION_TYPE, ES_LEGAL_FORM, FI_BUSINESS_NUMBER, FI_ID_NUMBER, FI_NATIONALITY, FI_ORGANIZATION_TYPE, IT_NATIONALITY, IT_PIN, IT_REGISTRANT_ENTITY_TYPE, RU_PASSPORT_DATA, SE_ID_NUMBER, SG_ID_NUMBER, VAT_NUMBER, UK_CONTACT_TYPE, UK_COMPANY_NUMBER, EU_COUNTRY_OF_CITIZENSHIP
#         value: "ExtraParamValue", # required
#       },
#     ],
#   },