IPv4 R&E Routing Table Report 23:05 GMT Sat 27 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: 1021833 Prefixes after maximum aggregation (per Origin AS): 393839 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505791 Number of IPv4 prefixes with a valid ROA: 608505 Number of IPv4 prefixes with an invalid ROA: 635 Number of IPv4 prefixes with no ROA: 412693 Total ASes present in the Internet Routing Table: 77612 Prefixes per ASN: 13.17 Origin-only ASes present in the Internet Routing Table: 66504 Origin ASes announcing only one prefix: 27086 Transit ASes present in the Internet Routing Table: 11108 Transit-only ASes present in the Internet Routing Table: 568 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: 973 Number of instances of unregistered ASNs: 1002 Number of 32-bit ASNs allocated by the RIRs: 48313 Number of 32-bit ASNs visible in the Routing Table: 39507 Prefixes from 32-bit ASNs in the Routing Table: 220133 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: 3105465856 Equivalent to 185 /8s, 25 /16s and 166 /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: 333509 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277754 Total APNIC prefixes after maximum aggregation: 80822 APNIC Deaggregation factor: 3.44 Prefixes being announced from the APNIC address blocks: 264153 Unique aggregates announced from the APNIC address blocks: 106360 APNIC Region origin ASes present in the Internet Routing Table: 14914 APNIC Prefixes per ASN: 17.71 APNIC Region origin ASes announcing only one prefix: 4510 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: 10500 Number of APNIC addresses announced to Internet: 753022464 Equivalent to 44 /8s, 226 /16s and 54 /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: 298607 Total ARIN prefixes after maximum aggregation: 134652 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298937 Unique aggregates announced from the ARIN address blocks: 145573 ARIN Region origin ASes present in the Internet Routing Table: 19350 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7066 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: 5415 Number of ARIN addresses announced to Internet: 1343115776 Equivalent to 80 /8s, 14 /16s and 82 /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: 282623 Total RIPE prefixes after maximum aggregation: 139981 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283558 Unique aggregates announced from the RIPE address blocks: 184097 RIPE Region origin ASes present in the Internet Routing Table: 29124 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12091 RIPE Region transit ASes present in the Internet Routing Table: 4046 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: 12892 Number of RIPE addresses announced to Internet: 735296512 Equivalent to 43 /8s, 211 /16s and 188 /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: 125670 Total LACNIC prefixes after maximum aggregation: 30847 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121437 Unique aggregates announced from the LACNIC address blocks: 49739 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: 2686 LACNIC Region transit ASes present in the Internet Routing Table: 2550 Average LACNIC Region AS path length visible: 5.4 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: 170492672 Equivalent to 10 /8s, 41 /16s and 131 /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: 36206 Total AfriNIC prefixes after maximum aggregation: 6883 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 53130 Unique aggregates announced from the AfriNIC address blocks: 19523 AfriNIC Region origin ASes present in the Internet Routing Table: 2003 AfriNIC Prefixes per ASN: 26.53 AfriNIC Region origin ASes announcing only one prefix: 733 AfriNIC Region transit ASes present in the Internet Routing Table: 380 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: 103224064 Equivalent to 6 /8s, 39 /16s and 19 /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 4643 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4558 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4043 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 13997 38461 5440 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 3445 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 7285 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 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 12638 3277 590 UNINET, MX 10620 3433 457 1107 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 1259 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 1264 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1100 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1058 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 551 82 3 KENET-AS, KE 15399 548 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 13997 38461 5440 AMAZON-02, US 9808 13369 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12638 3277 590 UNINET, MX 12479 7285 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 4643 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4558 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 12638 12048 UNINET, MX 12479 7285 7136 UNI2-AS, ES 7545 6034 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 4831 ALJAWWALSTC-AS, SA 18403 4558 4534 FPT-AS-AP FPT Telecom Company, VN 22773 4745 4371 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4643 4310 BBIL-AP BHARTI Airtel Ltd., IN 7552 4043 4014 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 /16:13645 /17:8159 /18:13430 /19:24704 /20:44703 /21:51950 /22:112933 /23:105510 /24:642468 /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 6845 12638 UNINET, MX 12479 6216 7285 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 13997 AMAZON-02, US 30036 2321 2664 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 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 2:1516 3:978 4:10 5:4983 6:187 7:6 8:1502 9:12 11:172 12:1229 13:600 14:2627 15:417 16:274 17:383 18:914 20:588 21:4 22:188 23:8059 24:2561 25:2 27:2797 29:19 31:3394 32:31 33:1 34:84 35:286 36:4624 37:4515 38:10395 39:1218 40:437 41:4515 42:2085 43:2941 44:411 45:19666 46:5047 47:395 49:2165 50:2054 51:597 52:1257 54:225 55:1125 56:11 57:307 58:2320 59:1343 60:1171 61:3089 62:3102 63:1754 64:5989 65:2123 66:5914 67:3233 68:1502 69:4185 70:1032 71:616 72:3079 74:2927 75:1517 76:598 77:2762 78:1921 79:1795 80:2304 81:2079 82:3929 83:1470 84:2024 85:3649 86:1100 87:2194 88:1358 89:4628 90:836 91:8428 92:2834 93:3014 94:4264 95:4556 96:1431 97:311 98:958 99:784 100:68 101:1338 102:4339 103:32869 104:5467 105:763 106:920 107:2815 108:1209 109:4250 110:2309 111:3993 112:2830 113:1958 114:2092 115:2265 116:2175 117:3194 118:3000 119:2106 120:2421 121:1503 122:2949 123:2284 124:1654 125:2964 126:125 128:1578 129:942 130:1529 131:2258 132:760 133:462 134:1632 135:538 136:1500 137:1211 138:3011 139:1592 140:1773 141:1560 142:2432 143:2119 144:1383 145:626 146:2185 147:2132 148:2788 149:2915 150:1327 151:2594 152:2248 153:820 154:9552 155:2279 156:4733 157:2253 158:1475 159:2727 160:3661 161:1991 162:3980 163:2329 164:1963 165:2655 166:1306 167:2196 168:3898 169:804 170:5450 171:1120 172:4521 173:3418 174:901 175:1353 176:3781 177:4728 178:4322 179:2287 180:2971 181:4353 182:3870 183:2690 184:2033 185:21683 186:5525 187:4773 188:4533 189:4464 190:9670 191:1536 192:11403 193:9511 194:7859 195:5651 196:3257 197:3275 198:6054 199:6103 200:8063 201:6380 202:10533 203:10584 204:4634 205:3698 206:4385 207:3792 208:4343 209:5438 210:4723 211:2681 212:4919 213:4031 214:1065 215:54 216:7102 217:3464 218:1606 219:411 220:2190 221:1296 222:776 223:3243 End of report