IPv4 R&E Routing Table Report 23:05 GMT Sun 21 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: 1019786 Prefixes after maximum aggregation (per Origin AS): 393746 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505686 Number of IPv4 prefixes with a valid ROA: 606743 Number of IPv4 prefixes with an invalid ROA: 609 Number of IPv4 prefixes with no ROA: 412434 Total ASes present in the Internet Routing Table: 77606 Prefixes per ASN: 13.14 Origin-only ASes present in the Internet Routing Table: 66514 Origin ASes announcing only one prefix: 27125 Transit ASes present in the Internet Routing Table: 11092 Transit-only ASes present in the Internet Routing Table: 555 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: 976 Number of instances of unregistered ASNs: 1005 Number of 32-bit ASNs allocated by the RIRs: 48272 Number of 32-bit ASNs visible in the Routing Table: 39503 Prefixes from 32-bit ASNs in the Routing Table: 219607 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: 711 Number of addresses announced to Internet: 3104945408 Equivalent to 185 /8s, 17 /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: 333160 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 276377 Total APNIC prefixes after maximum aggregation: 80732 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 263042 Unique aggregates announced from the APNIC address blocks: 106320 APNIC Region origin ASes present in the Internet Routing Table: 14914 APNIC Prefixes per ASN: 17.64 APNIC Region origin ASes announcing only one prefix: 4542 APNIC Region transit ASes present in the Internet Routing Table: 2000 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: 10499 Number of APNIC addresses announced to Internet: 753103616 Equivalent to 44 /8s, 227 /16s and 115 /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: 298082 Total ARIN prefixes after maximum aggregation: 134576 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298535 Unique aggregates announced from the ARIN address blocks: 145660 ARIN Region origin ASes present in the Internet Routing Table: 19364 ARIN Prefixes per ASN: 15.42 ARIN Region origin ASes announcing only one prefix: 7076 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: 5425 Number of ARIN addresses announced to Internet: 1342851584 Equivalent to 80 /8s, 10 /16s and 74 /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: 282514 Total RIPE prefixes after maximum aggregation: 140002 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283219 Unique aggregates announced from the RIPE address blocks: 183941 RIPE Region origin ASes present in the Internet Routing Table: 29137 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12102 RIPE Region transit ASes present in the Internet Routing Table: 4053 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: 12889 Number of RIPE addresses announced to Internet: 735145472 Equivalent to 43 /8s, 209 /16s and 110 /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: 125647 Total LACNIC prefixes after maximum aggregation: 30848 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121441 Unique aggregates announced from the LACNIC address blocks: 49711 LACNIC Region origin ASes present in the Internet Routing Table: 11322 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2673 LACNIC Region transit ASes present in the Internet Routing Table: 2545 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: 9329 Number of LACNIC addresses announced to Internet: 170464768 Equivalent to 10 /8s, 41 /16s and 22 /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: 36190 Total AfriNIC prefixes after maximum aggregation: 6927 AfriNIC Deaggregation factor: 5.22 Prefixes being announced from the AfriNIC address blocks: 52838 Unique aggregates announced from the AfriNIC address blocks: 19470 AfriNIC Region origin ASes present in the Internet Routing Table: 1994 AfriNIC Prefixes per ASN: 26.50 AfriNIC Region origin ASes announcing only one prefix: 732 AfriNIC Region transit ASes present in the Internet Routing Table: 382 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: 1361 Number of AfriNIC addresses announced to Internet: 103029504 Equivalent to 6 /8s, 36 /16s and 27 /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 13329 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6038 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4627 542 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4320 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 17561 2998 188 611 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 14026 38460 5447 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 3690 1320 82 SHAW, CA 396982 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 16625 2843 1217 2138 AKAMAI-AS, US 36352 2822 229 905 AS-COLOCROSSING, US 174 2713 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 7295 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3950 369 2260 M247, RO 20940 3824 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 1693 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 12635 3277 591 UNINET, MX 10620 3433 457 1107 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 1262 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1025 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 1845 1537 336 ETISALAT-MISR, EG 24863 1265 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 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 14026 38460 5447 AMAZON-02, US 9808 13329 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12635 3277 591 UNINET, MX 12479 7295 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 4627 542 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4320 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 13329 13209 CHINAMOBILE-CN China Mobile Communications Grou 8151 12635 12044 UNINET, MX 12479 7295 7146 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 4320 4296 FPT-AS-AP FPT Telecom Company, VN 9498 4627 4287 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 /15:2090 /16:13648 /17:8152 /18:13428 /19:24670 /20:44644 /21:51967 /22:112904 /23:105361 /24:640684 /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 6840 12635 UNINET, MX 12479 6226 7295 UNI2-AS, ES 11492 3532 4687 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3047 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2455 14026 AMAZON-02, US 30036 2322 2665 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) ---------------------------------------------- 1:2442 2:1516 3:974 4:10 5:4978 6:186 7:6 8:1502 9:10 11:172 12:1228 13:607 14:2623 15:416 16:290 17:383 18:913 20:587 21:4 22:188 23:8059 24:2560 25:2 27:2802 29:19 31:3391 32:31 33:1 34:84 35:287 36:4616 37:4526 38:9996 39:1206 40:439 41:4518 42:1931 43:2900 44:412 45:19638 46:5090 47:394 49:2158 50:2056 51:597 52:1308 54:225 55:1117 56:11 57:302 58:2317 59:1338 60:1170 61:3087 62:3100 63:1735 64:5991 65:2124 66:5908 67:3233 68:1504 69:4177 70:1028 71:617 72:3075 74:2918 75:1508 76:597 77:2765 78:1925 79:1793 80:2296 81:2084 82:3879 83:1472 84:2023 85:3641 86:1098 87:2193 88:1357 89:4621 90:835 91:8428 92:2835 93:3015 94:4270 95:4554 96:1430 97:312 98:952 99:784 100:68 101:1338 102:4319 103:32660 104:5491 105:754 106:918 107:2815 108:1210 109:4257 110:2307 111:3978 112:2813 113:1931 114:2093 115:2269 116:2178 117:3149 118:2962 119:2089 120:2408 121:1499 122:2946 123:2277 124:1650 125:2952 126:125 128:1572 129:940 130:1532 131:2267 132:758 133:462 134:1632 135:539 136:1505 137:1217 138:3009 139:1602 140:1770 141:1561 142:2427 143:2108 144:1367 145:625 146:2177 147:2133 148:2782 149:2946 150:1323 151:2586 152:2255 153:798 154:9441 155:2274 156:4596 157:2247 158:1475 159:2726 160:3673 161:1993 162:3985 163:2329 164:1962 165:2624 166:1309 167:2193 168:3910 169:814 170:5446 171:1126 172:4521 173:3429 174:901 175:1348 176:3755 177:4737 178:4296 179:2287 180:2967 181:4348 182:3857 183:2649 184:2038 185:21659 186:5513 187:4769 188:4470 189:4458 190:9660 191:1535 192:11417 193:9498 194:7856 195:5622 196:3286 197:3278 198:6050 199:6106 200:8067 201:6385 202:10448 203:10505 204:4631 205:3698 206:4368 207:3797 208:4330 209:5457 210:4720 211:2684 212:4897 213:4033 214:1062 215:54 216:7109 217:3449 218:1604 219:411 220:2192 221:1290 222:775 223:3236 End of report