IPv4 R&E Routing Table Report 23:05 GMT Thu 25 Dec, 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: 1021524 Prefixes after maximum aggregation (per Origin AS): 393792 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505870 Number of IPv4 prefixes with a valid ROA: 608214 Number of IPv4 prefixes with an invalid ROA: 632 Number of IPv4 prefixes with no ROA: 412678 Total ASes present in the Internet Routing Table: 77611 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66507 Origin ASes announcing only one prefix: 27079 Transit ASes present in the Internet Routing Table: 11104 Transit-only ASes present in the Internet Routing Table: 570 Paths with bogon ASNs present in the IPv4 Routing Table: 42 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 975 Number of instances of unregistered ASNs: 1004 Number of 32-bit ASNs allocated by the RIRs: 48304 Number of 32-bit ASNs visible in the Routing Table: 39505 Prefixes from 32-bit ASNs in the Routing Table: 220005 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 618 Number of addresses announced to Internet: 3105535232 Equivalent to 185 /8s, 26 /16s and 181 /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: 333542 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277371 Total APNIC prefixes after maximum aggregation: 80802 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 263782 Unique aggregates announced from the APNIC address blocks: 106402 APNIC Region origin ASes present in the Internet Routing Table: 14909 APNIC Prefixes per ASN: 17.69 APNIC Region origin ASes announcing only one prefix: 4508 APNIC Region transit ASes present in the Internet Routing Table: 2008 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10494 Number of APNIC addresses announced to Internet: 753158400 Equivalent to 44 /8s, 228 /16s and 73 /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: 298644 Total ARIN prefixes after maximum aggregation: 134627 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299027 Unique aggregates announced from the ARIN address blocks: 145646 ARIN Region origin ASes present in the Internet Routing Table: 19352 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7067 ARIN Region transit ASes present in the Internet Routing Table: 1925 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5419 Number of ARIN addresses announced to Internet: 1343079936 Equivalent to 80 /8s, 13 /16s and 198 /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: 282634 Total RIPE prefixes after maximum aggregation: 139988 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283521 Unique aggregates announced from the RIPE address blocks: 184049 RIPE Region origin ASes present in the Internet Routing Table: 29125 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12084 RIPE Region transit ASes present in the Internet Routing Table: 4048 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12893 Number of RIPE addresses announced to Internet: 735284224 Equivalent to 43 /8s, 211 /16s and 140 /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: 125652 Total LACNIC prefixes after maximum aggregation: 30830 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121442 Unique aggregates announced from the LACNIC address blocks: 49754 LACNIC Region origin ASes present in the Internet Routing Table: 11329 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2683 LACNIC Region transit ASes present in the Internet Routing Table: 2544 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9332 Number of LACNIC addresses announced to Internet: 170508288 Equivalent to 10 /8s, 41 /16s and 192 /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: 36248 Total AfriNIC prefixes after maximum aggregation: 6886 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 53134 Unique aggregates announced from the AfriNIC address blocks: 19520 AfriNIC Region origin ASes present in the Internet Routing Table: 2002 AfriNIC Prefixes per ASN: 26.54 AfriNIC Region origin ASes announcing only one prefix: 737 AfriNIC Region transit ASes present in the Internet Routing Table: 383 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1367 Number of AfriNIC addresses announced to Internet: 103190016 Equivalent to 6 /8s, 38 /16s and 142 /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 13361 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6035 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4639 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4331 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4042 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3727 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3391 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3323 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3167 199 633 LCS-AS-AP LARUS Limited, HK 24560 2955 865 496 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 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 13993 38461 5437 AMAZON-02, US 22773 4742 3098 373 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 82 SHAW, CA 174 3445 8769 863 COGENT-174, US 396982 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 16625 2844 1218 2134 AKAMAI-AS, US 36352 2702 222 888 AS-COLOCROSSING, 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 7279 1711 149 UNI2-AS, ES 39891 4901 302 70 ALJAWWALSTC-AS, SA 9009 3960 369 2270 M247, RO 20940 3833 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2567 182 1867 CDNEXT, GB 34984 2421 371 575 TELLCOM-AS, TR 8452 1699 1852 14 TE-AS TE-AS, EG 203020 1617 242 783 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA 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 12639 3277 590 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2489 506 351 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1369 2429 273 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1259 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 2486 56 TIM SA, BR 18881 904 1127 31 TELEFONICA BRASIL S.A, 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 1940 402 13 RAYA-AS, EG 36992 1847 1538 336 ETISALAT-MISR, EG 24863 1264 389 16 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1100 1096 13 MOBINIL, EG 29571 1071 94 22 ORANGE-COTE-IVOIRE, CI 36935 1058 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 561 82 3 KENET-AS, KE 15399 549 56 55 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 13993 38461 5437 AMAZON-02, US 9808 13361 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12639 3277 590 UNINET, MX 12479 7279 1711 149 UNI2-AS, ES 7545 6035 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 302 70 ALJAWWALSTC-AS, SA 22773 4742 3098 373 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 9498 4639 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4331 347 24 FPT-AS-AP FPT Telecom Company, 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 13361 13241 CHINAMOBILE-CN China Mobile Communications Grou 8151 12639 12049 UNINET, MX 12479 7279 7130 UNI2-AS, ES 7545 6035 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 4831 ALJAWWALSTC-AS, SA 22773 4742 4369 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4331 4307 FPT-AS-AP FPT Telecom Company, VN 9498 4639 4306 BBIL-AP BHARTI Airtel Ltd., IN 7552 4042 4013 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE, US 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 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 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US 21861 UNALLOCATED 12.37.59.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, 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 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 /11:93 /12:299 /13:578 /14:1199 /15:2091 /16:13649 /17:8161 /18:13429 /19:24700 /20:44704 /21:51945 /22:112924 /23:105492 /24:642189 /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 6844 12639 UNINET, MX 12479 6210 7279 UNI2-AS, ES 39891 3587 4901 ALJAWWALSTC-AS, SA 11492 3533 4688 CABLEONE, US 6327 3478 3690 SHAW, CA 22773 3048 4742 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2455 13993 AMAZON-02, US 30036 2323 2666 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3434 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) ---------------------------------------------- 1:2450 2:1513 3:978 4:10 5:4985 6:187 7:6 8:1503 9:10 11:172 12:1230 13:600 14:2627 15:417 16:274 17:383 18:914 20:587 21:4 22:188 23:8068 24:2571 25:2 27:2797 29:19 31:3394 32:31 33:1 34:84 35:286 36:4629 37:4517 38:10393 39:1218 40:437 41:4515 42:1913 43:2938 44:412 45:19666 46:5051 47:395 49:2165 50:2056 51:597 52:1257 54:225 55:1129 56:11 57:307 58:2320 59:1341 60:1170 61:3090 62:3100 63:1754 64:5992 65:2123 66:5920 67:3233 68:1502 69:4186 70:1032 71:616 72:3077 74:2922 75:1516 76:597 77:2750 78:1925 79:1798 80:2301 81:2086 82:3914 83:1471 84:2025 85:3643 86:1100 87:2192 88:1358 89:4625 90:835 91:8428 92:2831 93:3012 94:4267 95:4554 96:1429 97:311 98:956 99:784 100:68 101:1338 102:4342 103:32873 104:5455 105:765 106:920 107:2815 108:1209 109:4258 110:2310 111:3992 112:2830 113:1951 114:2091 115:2265 116:2180 117:3174 118:2912 119:2105 120:2421 121:1503 122:2945 123:2285 124:1651 125:2962 126:125 128:1575 129:944 130:1528 131:2249 132:761 133:462 134:1633 135:539 136:1500 137:1211 138:3008 139:1593 140:1771 141:1562 142:2431 143:2119 144:1378 145:625 146:2185 147:2135 148:2788 149:2922 150:1326 151:2592 152:2249 153:813 154:9541 155:2278 156:4716 157:2248 158:1476 159:2727 160:3663 161:1993 162:3984 163:2330 164:1964 165:2655 166:1306 167:2197 168:3902 169:807 170:5451 171:1119 172:4524 173:3421 174:901 175:1353 176:3783 177:4727 178:4320 179:2283 180:2968 181:4352 182:3864 183:2669 184:2038 185:21684 186:5534 187:4770 188:4540 189:4459 190:9667 191:1536 192:11403 193:9505 194:7863 195:5648 196:3254 197:3287 198:6054 199:6106 200:8061 201:6379 202:10477 203:10652 204:4641 205:3711 206:4384 207:3801 208:4343 209:5445 210:4721 211:2680 212:4926 213:4030 214:1067 215:54 216:7119 217:3455 218:1607 219:411 220:2191 221:1293 222:775 223:3244 End of report