IPv4 R&E Routing Table Report 23:05 GMT Sat 20 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: 1019530 Prefixes after maximum aggregation (per Origin AS): 393821 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505483 Number of IPv4 prefixes with a valid ROA: 605876 Number of IPv4 prefixes with an invalid ROA: 611 Number of IPv4 prefixes with no ROA: 413043 Total ASes present in the Internet Routing Table: 77603 Prefixes per ASN: 13.14 Origin-only ASes present in the Internet Routing Table: 66508 Origin ASes announcing only one prefix: 27128 Transit ASes present in the Internet Routing Table: 11095 Transit-only ASes present in the Internet Routing Table: 553 Paths with bogon ASNs present in the IPv4 Routing Table: 18 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 974 Number of instances of unregistered ASNs: 1003 Number of 32-bit ASNs allocated by the RIRs: 48255 Number of 32-bit ASNs visible in the Routing Table: 39499 Prefixes from 32-bit ASNs in the Routing Table: 219557 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: 714 Number of addresses announced to Internet: 3104849920 Equivalent to 185 /8s, 16 /16s and 64 /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: 333104 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 276170 Total APNIC prefixes after maximum aggregation: 80702 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 262971 Unique aggregates announced from the APNIC address blocks: 106300 APNIC Region origin ASes present in the Internet Routing Table: 14905 APNIC Prefixes per ASN: 17.64 APNIC Region origin ASes announcing only one prefix: 4541 APNIC Region transit ASes present in the Internet Routing Table: 2004 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: 10489 Number of APNIC addresses announced to Internet: 753017600 Equivalent to 44 /8s, 226 /16s and 35 /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: 298095 Total ARIN prefixes after maximum aggregation: 134571 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298552 Unique aggregates announced from the ARIN address blocks: 145643 ARIN Region origin ASes present in the Internet Routing Table: 19363 ARIN Prefixes per ASN: 15.42 ARIN Region origin ASes announcing only one prefix: 7075 ARIN Region transit ASes present in the Internet Routing Table: 1928 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: 5422 Number of ARIN addresses announced to Internet: 1342852096 Equivalent to 80 /8s, 10 /16s and 76 /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: 282500 Total RIPE prefixes after maximum aggregation: 140013 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283191 Unique aggregates announced from the RIPE address blocks: 183924 RIPE Region origin ASes present in the Internet Routing Table: 29141 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12105 RIPE Region transit ASes present in the Internet Routing Table: 4054 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: 12894 Number of RIPE addresses announced to Internet: 735141376 Equivalent to 43 /8s, 209 /16s and 94 /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: 125639 Total LACNIC prefixes after maximum aggregation: 30856 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121429 Unique aggregates announced from the LACNIC address blocks: 49699 LACNIC Region origin ASes present in the Internet Routing Table: 11326 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2676 LACNIC Region transit ASes present in the Internet Routing Table: 2551 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: 170460160 Equivalent to 10 /8s, 41 /16s and 4 /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: 36152 Total AfriNIC prefixes after maximum aggregation: 7021 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 52673 Unique aggregates announced from the AfriNIC address blocks: 19331 AfriNIC Region origin ASes present in the Internet Routing Table: 1996 AfriNIC Prefixes per ASN: 26.39 AfriNIC Region origin ASes announcing only one prefix: 731 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: 1362 Number of AfriNIC addresses announced to Internet: 103023104 Equivalent to 6 /8s, 36 /16s and 2 /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 13330 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6038 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4626 542 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4311 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4041 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3728 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3377 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3324 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2955 865 496 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2865 180 608 LCS-AS-AP LARUS Limited, HK 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 14044 38461 5449 AMAZON-02, US 22773 4777 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 16625 2857 1223 2141 AKAMAI-AS, US 36352 2821 229 904 AS-COLOCROSSING, US 174 2712 8769 863 COGENT-174, 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 7294 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3950 369 2260 M247, RO 20940 3833 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2563 182 1863 CDNEXT, GB 34984 2420 363 574 TELLCOM-AS, TR 8452 1689 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 12636 3277 590 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2493 507 353 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 1261 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1024 2486 56 TIM SA, BR 18881 907 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 1927 368 14 RAYA-AS, EG 36992 1824 1531 424 ETISALAT-MISR, EG 24863 1264 389 16 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1084 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1045 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 563 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 14044 38461 5449 AMAZON-02, US 9808 13330 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12636 3277 590 UNINET, MX 12479 7294 1711 149 UNI2-AS, ES 7545 6038 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4777 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 9498 4626 542 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4311 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 13330 13210 CHINAMOBILE-CN China Mobile Communications Grou 8151 12636 12046 UNINET, MX 12479 7294 7145 UNI2-AS, ES 7545 6038 5457 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4777 4410 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4311 4287 FPT-AS-AP FPT Telecom Company, VN 9498 4626 4286 BBIL-AP BHARTI Airtel Ltd., IN 7552 4041 4012 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 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 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 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 /13:577 /14:1198 /15:2091 /16:13646 /17:8153 /18:13423 /19:24665 /20:44654 /21:51948 /22:112908 /23:105336 /24:640468 /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 6841 12636 UNINET, MX 12479 6225 7294 UNI2-AS, ES 11492 3532 4687 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3047 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2454 14044 AMAZON-02, US 30036 2322 2665 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) ---------------------------------------------- 1:2434 2:1522 3:979 4:10 5:4979 6:186 7:6 8:1501 9:10 11:172 12:1223 13:607 14:2614 15:416 16:289 17:383 18:913 20:587 21:4 22:188 23:8063 24:2560 25:2 27:2804 29:19 31:3393 32:31 33:1 34:84 35:287 36:4618 37:4525 38:9998 39:1206 40:440 41:4507 42:1932 43:2897 44:410 45:19635 46:5084 47:394 49:2161 50:2055 51:597 52:1311 54:225 55:1123 56:11 57:302 58:2319 59:1338 60:1170 61:3088 62:3100 63:1735 64:5990 65:2124 66:5906 67:3233 68:1505 69:4176 70:1028 71:617 72:3075 74:2917 75:1508 76:597 77:2767 78:1922 79:1794 80:2296 81:2083 82:3884 83:1471 84:2015 85:3640 86:1100 87:2193 88:1357 89:4621 90:835 91:8423 92:2837 93:3015 94:4268 95:4554 96:1430 97:311 98:951 99:784 100:68 101:1338 102:4315 103:32635 104:5491 105:755 106:918 107:2815 108:1210 109:4255 110:2307 111:3979 112:2813 113:1928 114:2092 115:2269 116:2177 117:3149 118:2961 119:2090 120:2408 121:1498 122:2945 123:2275 124:1648 125:2952 126:125 128:1572 129:940 130:1532 131:2267 132:758 133:462 134:1632 135:538 136:1504 137:1214 138:3006 139:1602 140:1769 141:1568 142:2427 143:2106 144:1363 145:625 146:2180 147:2132 148:2782 149:2940 150:1323 151:2587 152:2255 153:798 154:9380 155:2274 156:4531 157:2243 158:1476 159:2727 160:3670 161:1993 162:3986 163:2325 164:1960 165:2627 166:1309 167:2190 168:3909 169:814 170:5445 171:1126 172:4524 173:3428 174:901 175:1348 176:3757 177:4735 178:4294 179:2289 180:2968 181:4348 182:3858 183:2645 184:2038 185:21664 186:5512 187:4767 188:4466 189:4460 190:9676 191:1529 192:11416 193:9498 194:7856 195:5626 196:3293 197:3278 198:6049 199:6105 200:8065 201:6379 202:10449 203:10503 204:4627 205:3702 206:4368 207:3797 208:4329 209:5455 210:4716 211:2684 212:4892 213:4033 214:1065 215:54 216:7109 217:3451 218:1604 219:411 220:2188 221:1290 222:775 223:3236 End of report