IPv4 R&E Routing Table Report 23:05 GMT Sun 17 Aug, 2025 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 993063 Prefixes after maximum aggregation (per Origin AS): 385603 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 489894 Number of IPv4 prefixes with a valid ROA: 561945 Number of IPv4 prefixes with an invalid ROA: 799 Number of IPv4 prefixes with no ROA: 430319 Total ASes present in the Internet Routing Table: 77122 Prefixes per ASN: 12.88 Origin-only ASes present in the Internet Routing Table: 66077 Origin ASes announcing only one prefix: 27010 Transit ASes present in the Internet Routing Table: 11045 Transit-only ASes present in the Internet Routing Table: 545 Paths with bogon ASNs present in the IPv4 Routing Table: 27 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 97 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1141 Number of instances of unregistered ASNs: 1173 Number of 32-bit ASNs allocated by the RIRs: 47200 Number of 32-bit ASNs visible in the Routing Table: 38783 Prefixes from 32-bit ASNs in the Routing Table: 208005 Number of bogon 32-bit ASNs visible in the Routing Table: 80 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 423 Number of addresses announced to Internet: 3107148032 Equivalent to 185 /8s, 51 /16s and 81 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 323287 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265484 Total APNIC prefixes after maximum aggregation: 78457 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256323 Unique aggregates announced from the APNIC address blocks: 105239 APNIC Region origin ASes present in the Internet Routing Table: 14738 APNIC Prefixes per ASN: 17.39 APNIC Region origin ASes announcing only one prefix: 4489 APNIC Region transit ASes present in the Internet Routing Table: 1996 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10296 Number of APNIC addresses announced to Internet: 749617920 Equivalent to 44 /8s, 174 /16s and 67 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 290391 Total ARIN prefixes after maximum aggregation: 132437 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 292004 Unique aggregates announced from the ARIN address blocks: 141811 ARIN Region origin ASes present in the Internet Routing Table: 19239 ARIN Prefixes per ASN: 15.18 ARIN Region origin ASes announcing only one prefix: 7059 ARIN Region transit ASes present in the Internet Routing Table: 1927 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5287 Number of ARIN addresses announced to Internet: 1349150720 Equivalent to 80 /8s, 106 /16s and 104 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-402332 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 277129 Total RIPE prefixes after maximum aggregation: 136950 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276254 Unique aggregates announced from the RIPE address blocks: 178877 RIPE Region origin ASes present in the Internet Routing Table: 29015 RIPE Prefixes per ASN: 9.52 RIPE Region origin ASes announcing only one prefix: 12094 RIPE Region transit ASes present in the Internet Routing Table: 4017 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12640 Number of RIPE addresses announced to Internet: 732177664 Equivalent to 43 /8s, 164 /16s and 37 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 124177 Total LACNIC prefixes after maximum aggregation: 30228 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120423 Unique aggregates announced from the LACNIC address blocks: 49430 LACNIC Region origin ASes present in the Internet Routing Table: 11279 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2657 LACNIC Region transit ASes present in the Internet Routing Table: 2534 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9245 Number of LACNIC addresses announced to Internet: 170816000 Equivalent to 10 /8s, 46 /16s and 114 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 34741 Total AfriNIC prefixes after maximum aggregation: 6798 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 47636 Unique aggregates announced from the AfriNIC address blocks: 14165 AfriNIC Region origin ASes present in the Internet Routing Table: 1951 AfriNIC Prefixes per ASN: 24.42 AfriNIC Region origin ASes announcing only one prefix: 711 AfriNIC Region transit ASes present in the Internet Routing Table: 376 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 89 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1315 Number of AfriNIC addresses announced to Internet: 105145856 Equivalent to 6 /8s, 68 /16s and 102 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 12877 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6138 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4600 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3939 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3716 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3301 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2971 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 865 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2174 427 181 TATACOMM-AS TATA Communications formerly Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13793 41098 5331 AMAZON-02, US 11492 4733 314 786 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3645 1320 82 SHAW, CA 22773 3343 3029 165 ASN-CXA-ALL-CCI-22773-RDC, US 174 3281 8769 858 COGENT-174, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3215 3858 436 GOOGLE-CLOUD-PLATFORM, US 4155 2932 229 1738 USDA-1, US 16625 2903 1223 2164 AKAMAI-AS, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7549 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3906 3395 123 AKAMAI-ASN1, NL 9009 3858 365 2175 M247, RO 12389 3112 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 584 TELLCOM-AS, TR 212238 2331 165 1695 CDNEXT, GB 203020 1640 209 771 HOSTROYALE, IN 13188 1605 100 37 TRIOLAN, UA 8452 1592 1852 14 TE-AS TE-AS, EG Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12335 3272 580 UNINET, MX 10620 3483 472 1049 Telmex Colombia S.A., CO 13999 2527 511 349 Mega Cable, S.A. de C.V., MX 11830 1986 369 64 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1185 371 22 Telefonica del Peru S.A.A., PE 11664 1086 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1055 67 375 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1018 2487 55 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1770 660 28 RAYA-AS, EG 29571 1499 94 32 ORANGE-COTE-IVOIRE, CI 36992 1421 1501 377 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1242 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 972 520 42 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 563 82 3 KENET-AS, KE 15399 535 56 53 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13793 41098 5331 AMAZON-02, US 9808 12877 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12335 3272 580 UNINET, MX 12479 7549 1711 149 UNI2-AS, ES 7545 6138 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4733 314 786 CABLEONE, US 18403 4600 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3939 1332 27 VIETEL-AS-AP Viettel Group, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 12877 12762 CHINAMOBILE-CN China Mobile Communications Grou 8151 12335 11755 UNINET, MX 12479 7549 7400 UNI2-AS, ES 7545 6138 5522 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4600 4573 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4733 3947 CABLEONE, US 7552 3939 3912 VIETEL-AS-AP Viettel Group, VN 20940 3906 3783 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:41 /11:92 /12:298 /13:577 /14:1198 /15:2126 /16:13757 /17:8151 /18:13423 /19:24443 /20:43858 /21:51613 /22:111944 /23:102787 /24:618725 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6554 12335 UNINET, MX 12479 6509 7549 UNI2-AS, ES 11492 3552 4733 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3442 3645 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2495 3343 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2364 13793 AMAZON-02, US 30036 2302 2645 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2203 3483 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2423 2:1496 3:882 4:10 5:4769 6:158 7:6 8:1545 9:3 11:172 12:1250 13:453 14:2586 15:377 16:283 17:379 18:901 20:564 21:4 22:188 23:7756 24:2652 25:2 27:2800 29:19 31:3363 32:29 33:1 34:83 35:261 36:4287 37:4560 38:9287 39:982 40:262 41:4272 42:2066 43:2741 44:381 45:18700 46:5106 47:338 49:1931 50:2047 51:592 52:1548 54:321 55:1106 56:11 57:277 58:2266 59:1290 60:1175 61:2919 62:3012 63:1776 64:5576 65:2143 66:4765 67:3091 68:1069 69:3887 70:1038 71:626 72:2844 74:2798 75:1505 76:603 77:2767 78:1892 79:1739 80:2212 81:2067 82:3254 83:1434 84:1916 85:3450 86:1124 87:2138 88:1318 89:4458 90:775 91:8413 92:2763 93:2964 94:4136 95:4434 96:1443 97:310 98:957 99:708 100:71 101:1469 102:3890 103:32898 104:5265 105:760 106:874 107:2641 108:1262 109:4178 110:2250 111:3585 112:2458 113:1861 114:1979 115:2190 116:2089 117:2694 118:3043 119:1918 120:2196 121:1325 122:2805 123:2225 124:1703 125:2925 126:91 128:1584 129:962 130:1283 131:2053 132:776 133:450 134:1613 135:356 136:1471 137:1126 138:2831 139:1602 140:1617 141:1534 142:1912 143:1973 144:1196 145:575 146:2174 147:2100 148:2713 149:2981 150:1272 151:2378 152:2102 153:527 154:7532 155:1880 156:3082 157:1955 158:1380 159:2522 160:3601 161:1908 162:3894 163:2266 164:1876 165:2466 166:1535 167:2052 168:3879 169:779 170:5227 171:1003 172:4228 173:3387 174:903 175:1325 176:3742 177:4701 178:3990 179:2314 180:2732 181:4177 182:3592 183:2360 184:2058 185:21594 186:5229 187:4634 188:4285 189:4332 190:9524 191:1531 192:11297 193:9477 194:7789 195:5618 196:3284 197:3217 198:6079 199:8638 200:8078 201:6370 202:10404 203:10659 204:4561 205:3608 206:4505 207:3512 208:4276 209:5118 210:4666 211:2647 212:4602 213:3831 214:1038 215:51 216:6790 217:3303 218:1428 219:399 220:2139 221:1208 222:742 223:2825 End of report