IPv4 R&E Routing Table Report 23:05 GMT Sun 28 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: 1021609 Prefixes after maximum aggregation (per Origin AS): 393879 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505732 Number of IPv4 prefixes with a valid ROA: 608346 Number of IPv4 prefixes with an invalid ROA: 651 Number of IPv4 prefixes with no ROA: 412612 Total ASes present in the Internet Routing Table: 77629 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66513 Origin ASes announcing only one prefix: 27088 Transit ASes present in the Internet Routing Table: 11116 Transit-only ASes present in the Internet Routing Table: 571 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: 962 Number of instances of unregistered ASNs: 991 Number of 32-bit ASNs allocated by the RIRs: 48318 Number of 32-bit ASNs visible in the Routing Table: 39526 Prefixes from 32-bit ASNs in the Routing Table: 220212 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: 605 Number of addresses announced to Internet: 3105437696 Equivalent to 185 /8s, 25 /16s and 56 /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: 333469 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277591 Total APNIC prefixes after maximum aggregation: 80820 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 264007 Unique aggregates announced from the APNIC address blocks: 106376 APNIC Region origin ASes present in the Internet Routing Table: 14921 APNIC Prefixes per ASN: 17.69 APNIC Region origin ASes announcing only one prefix: 4513 APNIC Region transit ASes present in the Internet Routing Table: 2012 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: 10507 Number of APNIC addresses announced to Internet: 753087488 Equivalent to 44 /8s, 227 /16s and 52 /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: 298579 Total ARIN prefixes after maximum aggregation: 134655 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298925 Unique aggregates announced from the ARIN address blocks: 145574 ARIN Region origin ASes present in the Internet Routing Table: 19355 ARIN Prefixes per ASN: 15.44 ARIN Region origin ASes announcing only one prefix: 7068 ARIN Region transit ASes present in the Internet Routing Table: 1927 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: 1343104256 Equivalent to 80 /8s, 14 /16s and 37 /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: 282594 Total RIPE prefixes after maximum aggregation: 139959 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283527 Unique aggregates announced from the RIPE address blocks: 184069 RIPE Region origin ASes present in the Internet Routing Table: 29129 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12090 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: 34 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12902 Number of RIPE addresses announced to Internet: 735279104 Equivalent to 43 /8s, 211 /16s and 120 /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: 125688 Total LACNIC prefixes after maximum aggregation: 30903 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121457 Unique aggregates announced from the LACNIC address blocks: 49721 LACNIC Region origin ASes present in the Internet Routing Table: 11332 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2682 LACNIC Region transit ASes present in the Internet Routing Table: 2552 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: 9333 Number of LACNIC addresses announced to Internet: 170482688 Equivalent to 10 /8s, 41 /16s and 92 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + 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: 36195 Total AfriNIC prefixes after maximum aggregation: 6888 AfriNIC Deaggregation factor: 5.25 Prefixes being announced from the AfriNIC address blocks: 53088 Unique aggregates announced from the AfriNIC address blocks: 19512 AfriNIC Region origin ASes present in the Internet Routing Table: 2001 AfriNIC Prefixes per ASN: 26.53 AfriNIC Region origin ASes announcing only one prefix: 735 AfriNIC Region transit ASes present in the Internet Routing Table: 379 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: 1365 Number of AfriNIC addresses announced to Internet: 103171584 Equivalent to 6 /8s, 38 /16s and 70 /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 13369 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6034 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4646 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4361 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4052 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3728 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3391 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3324 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3166 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 13995 38461 5438 AMAZON-02, US 22773 4745 3098 374 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 3444 8769 864 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 7284 1711 149 UNI2-AS, ES 39891 4901 302 70 ALJAWWALSTC-AS, SA 9009 3961 369 2271 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 2419 371 574 TELLCOM-AS, TR 8452 1701 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 12644 3277 590 UNINET, MX 10620 3399 453 1148 Telmex Colombia S.A., CO 13999 2487 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 1260 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 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 1266 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1100 1096 13 MOBINIL, EG 36935 1076 522 33 Vodafone-, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 15399 548 56 55 WANANCHI-, KE 36914 546 82 3 KENET-AS, 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 13995 38461 5438 AMAZON-02, US 9808 13369 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12644 3277 590 UNINET, MX 12479 7284 1711 149 UNI2-AS, ES 7545 6034 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 302 70 ALJAWWALSTC-AS, SA 22773 4745 3098 374 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 9498 4646 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4361 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 13369 13249 CHINAMOBILE-CN China Mobile Communications Grou 8151 12644 12054 UNINET, MX 12479 7284 7135 UNI2-AS, ES 7545 6034 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 4831 ALJAWWALSTC-AS, SA 22773 4745 4371 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4361 4337 FPT-AS-AP FPT Telecom Company, VN 9498 4646 4313 BBIL-AP BHARTI Airtel Ltd., IN 7552 4052 4023 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 /16:13647 /17:8161 /18:13431 /19:24704 /20:44695 /21:51950 /22:112910 /23:105524 /24:642256 /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 6849 12644 UNINET, MX 12479 6215 7284 UNI2-AS, ES 39891 3587 4901 ALJAWWALSTC-AS, SA 11492 3533 4688 CABLEONE, US 6327 3478 3690 SHAW, CA 22773 3050 4745 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2456 13995 AMAZON-02, US 30036 2321 2664 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2188 3399 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) ---------------------------------------------- 1:2448 2:1517 3:978 4:10 5:4987 6:187 7:6 8:1502 9:12 11:172 12:1230 13:600 14:2627 15:417 16:274 17:383 18:914 20:589 21:4 22:188 23:8059 24:2561 25:2 27:2799 29:19 31:3392 32:31 33:1 34:84 35:286 36:4628 37:4517 38:10398 39:1218 40:436 41:4497 42:1937 43:2945 44:412 45:19682 46:5046 47:395 49:2165 50:2054 51:596 52:1257 54:225 55:1125 56:11 57:307 58:2319 59:1343 60:1171 61:3090 62:3103 63:1756 64:5994 65:2126 66:5916 67:3233 68:1502 69:4181 70:1032 71:616 72:3077 74:2929 75:1517 76:598 77:2751 78:1926 79:1791 80:2303 81:2078 82:3917 83:1470 84:2024 85:3648 86:1100 87:2194 88:1358 89:4629 90:836 91:8427 92:2822 93:3018 94:4257 95:4558 96:1431 97:311 98:958 99:784 100:68 101:1331 102:4347 103:32891 104:5465 105:770 106:920 107:2815 108:1211 109:4260 110:2309 111:3994 112:2830 113:1958 114:2092 115:2265 116:2177 117:3194 118:2979 119:2107 120:2421 121:1503 122:2949 123:2283 124:1654 125:2965 126:125 128:1576 129:942 130:1527 131:2263 132:751 133:462 134:1632 135:539 136:1500 137:1212 138:3011 139:1596 140:1774 141:1563 142:2432 143:2131 144:1383 145:626 146:2185 147:2132 148:2787 149:2915 150:1327 151:2589 152:2248 153:820 154:9532 155:2278 156:4722 157:2255 158:1475 159:2726 160:3660 161:1993 162:3978 163:2328 164:1963 165:2655 166:1306 167:2195 168:3905 169:806 170:5458 171:1119 172:4521 173:3419 174:901 175:1351 176:3781 177:4750 178:4323 179:2287 180:2971 181:4346 182:3861 183:2671 184:2025 185:21690 186:5519 187:4773 188:4537 189:4462 190:9666 191:1538 192:11397 193:9510 194:7862 195:5650 196:3256 197:3246 198:6055 199:6105 200:8056 201:6378 202:10529 203:10580 204:4634 205:3694 206:4386 207:3793 208:4341 209:5437 210:4722 211:2681 212:4924 213:4031 214:1066 215:54 216:7102 217:3461 218:1608 219:411 220:2190 221:1301 222:776 223:3244 End of report