IPv4 R&E Routing Table Report 23:05 GMT Sat 12 Jul, 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: 985059 Prefixes after maximum aggregation (per Origin AS): 382329 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 486060 Number of IPv4 prefixes with a valid ROA: 554102 Number of IPv4 prefixes with an invalid ROA: 651 Number of IPv4 prefixes with no ROA: 430306 Total ASes present in the Internet Routing Table: 76884 Prefixes per ASN: 12.81 Origin-only ASes present in the Internet Routing Table: 65879 Origin ASes announcing only one prefix: 26881 Transit ASes present in the Internet Routing Table: 11005 Transit-only ASes present in the Internet Routing Table: 544 Paths with bogon ASNs present in the IPv4 Routing Table: 30 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 79 Max AS path prepend of ASN ( 37447) 75 Prefixes from unregistered ASNs in the Routing Table: 1159 Number of instances of unregistered ASNs: 1196 Number of 32-bit ASNs allocated by the RIRs: 46816 Number of 32-bit ASNs visible in the Routing Table: 38508 Prefixes from 32-bit ASNs in the Routing Table: 205699 Number of bogon 32-bit ASNs visible in the Routing Table: 90 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 460 Number of addresses announced to Internet: 3105962496 Equivalent to 185 /8s, 33 /16s and 58 /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: 321531 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 261751 Total APNIC prefixes after maximum aggregation: 77695 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 252536 Unique aggregates announced from the APNIC address blocks: 104880 APNIC Region origin ASes present in the Internet Routing Table: 14667 APNIC Prefixes per ASN: 17.22 APNIC Region origin ASes announcing only one prefix: 4453 APNIC Region transit ASes present in the Internet Routing Table: 1977 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10216 Number of APNIC addresses announced to Internet: 749088000 Equivalent to 44 /8s, 166 /16s and 45 /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: 289359 Total ARIN prefixes after maximum aggregation: 131656 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291203 Unique aggregates announced from the ARIN address blocks: 140842 ARIN Region origin ASes present in the Internet Routing Table: 19185 ARIN Prefixes per ASN: 15.18 ARIN Region origin ASes announcing only one prefix: 7035 ARIN Region transit ASes present in the Internet Routing Table: 1922 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 71 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5238 Number of ARIN addresses announced to Internet: 1349274112 Equivalent to 80 /8s, 108 /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: 275749 Total RIPE prefixes after maximum aggregation: 135674 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274655 Unique aggregates announced from the RIPE address blocks: 176938 RIPE Region origin ASes present in the Internet Routing Table: 28926 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12042 RIPE Region transit ASes present in the Internet Routing Table: 3998 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: 12536 Number of RIPE addresses announced to Internet: 731354624 Equivalent to 43 /8s, 151 /16s and 150 /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: 124152 Total LACNIC prefixes after maximum aggregation: 29820 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 120517 Unique aggregates announced from the LACNIC address blocks: 49071 LACNIC Region origin ASes present in the Internet Routing Table: 11271 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2655 LACNIC Region transit ASes present in the Internet Routing Table: 2531 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9230 Number of LACNIC addresses announced to Internet: 171169280 Equivalent to 10 /8s, 51 /16s and 214 /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: 32889 Total AfriNIC prefixes after maximum aggregation: 6712 AfriNIC Deaggregation factor: 4.90 Prefixes being announced from the AfriNIC address blocks: 45688 Unique aggregates announced from the AfriNIC address blocks: 13915 AfriNIC Region origin ASes present in the Internet Routing Table: 1922 AfriNIC Prefixes per ASN: 23.77 AfriNIC Region origin ASes announcing only one prefix: 696 AfriNIC Region transit ASes present in the Internet Routing Table: 378 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 79 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1288 Number of AfriNIC addresses announced to Internet: 104818432 Equivalent to 6 /8s, 63 /16s and 103 /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 11755 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6147 840 622 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4462 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4442 535 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3911 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3701 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3289 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2902 862 519 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2653 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2186 434 193 TATACOMM-AS TATA Communications formerly 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 13657 40959 5254 AMAZON-02, US 11492 4788 317 606 CABLEONE, US 7155 3857 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3518 8769 846 COGENT-174, US 22773 3339 3034 168 ASN-CXA-ALL-CCI-22773-RDC, US 749 3225 54767 2476 DNIC-AS-00749, US 396982 3195 3854 432 GOOGLE-CLOUD-PLATFORM, US 16625 2956 1245 2205 AKAMAI-AS, US 4155 2852 216 1723 USDA-1, 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 7637 1713 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3941 3395 123 AKAMAI-ASN1, NL 9009 3775 360 2105 M247, RO 12389 3118 2317 874 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2401 361 581 TELLCOM-AS, TR 212238 2349 168 1716 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1580 1852 14 TE-AS TE-AS, EG 8551 1428 366 39 BEZEQ-INTERNATIONAL-AS Bezeqint Internet 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 12289 3252 567 UNINET, MX 10620 3512 481 1022 Telmex Colombia S.A., CO 13999 2530 538 352 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1370 2435 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1346 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1197 371 22 Telefonica del Peru S.A.A., PE 22884 1051 67 377 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 11664 1047 278 33 Techtel LMDS Comunicaciones Interactivas 26615 1023 2487 55 TIM SA, 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 1619 633 33 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36903 1249 554 96 MT-MPLS, MA 36992 1143 1466 339 ETISALAT-MISR, EG 36935 741 520 39 Vodafone-, EG 24863 646 389 22 LINKdotNET-AS, EG 37069 600 1112 11 MOBINIL, EG 20011 568 154 212 INTERNET-SOLUTIONS, ZA 36914 567 82 3 KENET-AS, KE 15399 534 56 53 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 13657 40959 5254 AMAZON-02, US 8151 12289 3252 567 UNINET, MX 9808 11755 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7637 1713 150 UNI2-AS, ES 7545 6147 840 622 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4788 317 606 CABLEONE, US 18403 4462 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4442 535 312 BBIL-AP BHARTI Airtel Ltd., IN 20940 3941 3395 123 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 12289 11722 UNINET, MX 9808 11755 11639 CHINAMOBILE-CN China Mobile Communications Grou 12479 7637 7487 UNI2-AS, ES 7545 6147 5525 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4462 4436 FPT-AS-AP FPT Telecom Company, VN 11492 4788 4182 CABLEONE, US 9498 4442 4130 BBIL-AP BHARTI Airtel Ltd., IN 7552 3911 3884 VIETEL-AS-AP Viettel Group, VN 20940 3941 3818 AKAMAI-ASN1, NL 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 206734 UNALLOCATED 5.175.236.0/24 215120 EVOLUS-IX, AT 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 6939 HURRICANE, 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /11:92 /12:298 /13:577 /14:1193 /15:2124 /16:13721 /17:8152 /18:13410 /19:24331 /20:43352 /21:51442 /22:110970 /23:102301 /24:613025 /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 12479 6570 7637 UNI2-AS, ES 8151 6517 12289 UNINET, MX 11492 3582 4788 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2816 3857 VIASAT-SP-BACKBONE, US 22773 2489 3339 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2344 13657 AMAZON-02, US 30036 2267 2608 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2199 3512 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) ---------------------------------------------- 1:2406 2:1498 3:851 4:10 5:4770 6:162 7:6 8:1555 9:1 11:172 12:1341 13:457 14:2557 15:366 16:285 17:377 18:898 20:556 21:4 22:188 23:7680 24:2671 25:2 27:2796 29:19 31:3316 32:35 33:1 34:83 35:256 36:3536 37:4580 38:9439 39:908 40:250 41:4124 42:1945 43:2715 44:369 45:18574 46:5083 47:335 49:1890 50:1933 51:592 52:1554 54:324 55:1109 56:11 57:270 58:2211 59:1271 60:1174 61:2827 62:2882 63:1790 64:5520 65:2169 66:4686 67:3089 68:1089 69:3860 70:1041 71:621 72:2850 74:2774 75:1503 76:608 77:2759 78:1898 79:1715 80:2192 81:2069 82:3153 83:1444 84:1869 85:3453 86:1084 87:2128 88:1311 89:4429 90:774 91:8413 92:2750 93:2937 94:4098 95:4400 96:1445 97:310 98:962 99:697 100:72 101:1436 102:3909 103:32841 104:5269 105:732 106:975 107:2638 108:1252 109:4166 110:2245 111:3273 112:2216 113:1852 114:1955 115:2211 116:2076 117:2555 118:2975 119:1929 120:2128 121:1324 122:2781 123:2211 124:1677 125:2904 126:91 128:1574 129:960 130:1284 131:2045 132:763 133:450 134:1573 135:349 136:1431 137:1127 138:2826 139:1585 140:1628 141:1533 142:1914 143:1941 144:1196 145:560 146:2169 147:2101 148:2702 149:2934 150:1244 151:2222 152:2072 153:525 154:7666 155:1820 156:3026 157:1937 158:1345 159:2486 160:3625 161:1848 162:3875 163:2229 164:1869 165:2075 166:1508 167:2020 168:3977 169:777 170:5133 171:1004 172:4416 173:3359 174:917 175:1323 176:3706 177:4725 178:3949 179:2307 180:2738 181:4100 182:3494 183:2264 184:2067 185:21536 186:5215 187:4617 188:4268 189:4312 190:9549 191:1478 192:11292 193:9462 194:7778 195:5570 196:3220 197:3151 198:6062 199:8572 200:8097 201:6388 202:10366 203:10608 204:4566 205:3609 206:4468 207:3501 208:4262 209:5104 210:4554 211:2572 212:4546 213:3780 214:1036 215:46 216:6758 217:3164 218:1360 219:397 220:2142 221:1184 222:711 223:2623 End of report